Dilbert Strips Collector's Corner

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This page lists some non-book Dilbert strips. If you know of others, please let me know and I will add them here.

Jump to: Versions, Robots Read News, Dilbert Originals, Other Originals, Mistakes, Non-Book Strips

Versions

These are alternative versions to what was published in newspapers, although in some cases, the alternative version was the one published. Most of these are due to Scott's delightful sense of humour being too much for newspaper editors who want to protect their readers.

Uber Driver 2016-03-01
A rough version of the strip was published on 2016-01-06. The rough version had the finished dialogue and rough pencil sketches for the characters, Asok and Wally. This strip was part of the six-week "Vacation Artist" period, so was likely a strip supplied to the artist for them to draw. In this case, the artist was John Glynn.
Do No Harm 2015-09-04
A strip showing the too violent version and the published version. The too violent version ended with Alice, having punched through the back of the robot's head, saying "Remember how I argued that robots should not have rear sensors? This is why." The published version had her saying "I gave you the personality of a guy."
Not Genuine 2014-12-17
Scott had some Windows problems and had to phone tech support. From that, he created a strip (published on 2015-03-01) and published a preview of the first two panels.
Bitcoin Thief 2014-04-02
Scott published to first two panels of an upcoming strip on 2014-02-13. The first two panels are Dogbert describing how he will steal bitcoins from dumb criminals. The third panel reads "This panel will be available 4-2-14"
Desiccated Crone 2013-10-30
Another alternative ending that was deemed too strong. The Boss hires a desiccated crone to teach the engineers to eat with manners. The rejected version has Alice saying "this class is a big fork cue." The published version contains "When I'm too lazy to make a shiv?"
Bank Deposit 2012-07-14
Scott makes fun of banks when Dilbert makes a deposit. The bank teller says honesty "makes cross-selling harder" in the published version and an early version has "makes cross-selling a bitch."
Where Marketing Data Comes From 2006-11-21
The original showed a marketing person with an ass for a head pulling a document out of his head. The published version had the ass on the top of his head covered by underpants and the document coming out through the waistband. Stick to Drawing Comics, Monkey Brain!, page 265.
Asok's Butt 2006-06-24
The original drawing showed Asok's naked butt. The editors thought that too many people would complain so the comic was redrawn with underpants. The underpants showed the outline of Asok's buttocks, but no-one complained. Stick to Drawing Comics, Monkey Brain!, page 130.
Porn is too Strong a Word 2006-03-05
Scott's editor objected to the use of the word porn ("There's too much porn on your hard drive") and so suggested smut to replace it. Scott published just the one panel containing the word in question, not the whole strip, on 2006-01-23.
It Keeps Uranus Warm 2006-04-03
This one snuck by the censors but some newspapers' editors changed Uranus to Pluto. So Scott claims, tho' I haven't seen the changed one to verify.
Internet is Full 2006-02-22
This strip was adapted, with changed dialog, into a 404 page. The Boss asks about a 404 page instead of e-mail not working.
Jet-Lagged Baby 2006-01-25
A baby in the office stares at a well-endowed woman presumably wanting to breast-feed. The tamer, newspaper-published version had the dialogue "Hey, I just got a crazy idea." The original version, published on the internet comic web sites, contained "Less talking, more burping." Stick to Drawing Comics, Monkey Brain!, page 75.
When Life Gives You Lemons 2005-12-09
Scott published an version of this strip a few days early on his blog. The early version had the dialogue in the first panel intact, but the rest of the dialogue removed. Scott asked his blog readers to supply their own lines in the comments section and then quoted the ones he liked. This is a fore-runner of the Mashup section at the Dilbert site.
Interviewing the Boss's Pet 2005-11-03
This one contains a reference to sexual harassment that's subtle enough for most people to miss ("now do the leg thing"). The published version replaced the last panel with the Boss saying something complimentary and mundane ("nice furrowing of the brows"). Stick to Drawing Comics, Monkey Brain!, page 20.
Porpoise Attacking a Shark 2005-09-06
The tame version showed a lawyer's body with a large, porpoise-snout-sized hole in the middle of his back. The offensive version showed the lawyer's body with the porpoise still lodged up his rear end. Stick to Drawing Comics, Monkey Brain!, page 11.
Is that Donut Loaded? 2005-08-04
Scott shows some early versions of the strip. The first version showed a police officer shooting his gun. Since there is a "rule" against guns firing in comics, the depiction of the shooting was replaced by the entire panel showing Bam, Bam in the second version. The final version reverted back to the original drawing except that the gun firing bullets was replaced by a donut firing some bullets. That, apparently, is OK. Stick to Drawing Comics, Monkey Brain!, pages 7 and 8
Breeding Owls 2005-05-17
A version with the final panel covered with a sign that said it was "hilarious but offensive" and the reader could go to dilbert.com to see it. Some papers published the uncensored version.
Wally Surviving in Jail 2001-05-09
The newspaper version has Wally trying to impress his cellmate by wanting to get temporary tattoos at the gift shop. The web version replaced the last panel with Wally asking his cellmate to close his eyes and whistle while Wally used the toilet.
Brand Awareness 2000-08-06
The web version showed Wally's butt cleavage as he was being branded. The newspaper version had that censored and just left his butt smooth.
Face Time 2000-02-09
The newspaper version shows a VP making faces at Dilbert. The web-only version replaces the last panel with Dilbert watching another employee kissing the VP on the ass. "He's still giving face time to someone else."
Special Olympics 1999-01-06
The web version contained a phrase that was considered "in poor taste" and it was changed for the newspaper version.
Still Beating Heart 1998-09-05
The published version has three panels and the web version had a fourth panel. The extra panel showed Alice being violent.
It Might Have Sucked 1997-07-17
There were two versions published in newspapers that day depending on the editor's choice. One version contained the word sucked. The alternative version replaced that with been useless.
The O-Word 1997-08-18
This strip shows Dilbert recruiting students. The strip had Dilbert misleadingly comparing meetings to parties: "I'm not allowed to say the O-word" appeared in the newspaper version. The web version had orgy instead of the O-word.

Robots Read News

A sort of side strip showing a robot news reader. There are some published as part of the Dilbert strip, and the following lists the ones published on his Twitter and blog feeds. The Twitter and blog RRN strips started 2014-02-12.

  • #87. President Trump is willing to meet with Kim Jong-Un. Kim thinks the United States is trying to kill him, though. (2017-05-05)
  • #86. United Airlines drags a person off a flight. President Trump re-accomodates a Syrian air base. An original and corrected version exist according to a tweet but I haven't seen the original so I don't know the difference. Blog version (2017-04-11)
  • #85. Critics say Trump's unpresidential tweets worked in the past, but won't work in the future. Note: This list must be missing a few. The Twitter post indicates this is #85. (2017-03-04)
  • #77. The Almighty Creator sends the Pope to smite Trump. Church attendance dropped and Trump surged to a new high in the polls. (2016-02-18)
  • #76. Marco Robotio suffered a hardware glitch in a debate. Its sweat shorted out its answer module. Ted Cruz reminded Trump supporters to vote. (2016-02-07)
  • #75. British politicians acted like Trump for a month to insult him. Impressions were dead-on except not self-aware. (2016-01-19)
  • #74. Donald Trump offered $10 million to a Haitian charity if Sean Penn interviews Hillary Clinton. Other unimportant stuff happened, too. (2016-01-15)
  • #73. Trump plans to pardon Hillary Clinton if she's alive next year. He also promised to paint the White House gold. Thank past the sale again. (2016-01-09)
  • #72. In Paris, a terrorist lost a cage match to a robot. Losing to a robot means an afterlife in a Radio Shack. (2016-01-07)
  • #71. Bill Clinton campaigned for Hillary. Similar to trying to shit a porcupine while your balls are on fire. (2016-01-03)
  • #70. Putin and Trump agreed to turn ISIS into a reality television show, Zombie Target Practice. Putin will use a flamethrower and say "You're Fried!" (2016-01-01)
  • #69. Hitler was confirmed to have only one testicle. Note: four separate strips containing four separate punchlines. (2015-12-21)
    1. That makes Hitler halfway between Donald Trump and Hillary Clinton. This version was also published on Twitter.
    2. One testicle was totally cool and minded it's own business. The other was like Hitler.
    3. Donald Trump is one ball away from being Hitler. So is Hillary Clinton.
    4. The unhappiest people in the world are Lance Armstrong and employees of Uni-Ball Pens. Bad associations.
  • #68. Bernie Sanders' campaign accessed Hillary Clinton's voter database, from an unsecure server. Is Sanders working with Putin to get Trump elected? (2015-12-18)
  • #67. Donald Trump is not quite immortal, but close. His doorman tried to kill him several times this month. (2015-12-14)
  • #66. Illegal immigrants protested robots taking their jobs. Donald Trump promised to deport the robots back to their factories to kill the people who built them. (2015-12-04)
  • #65. Economists are just as reliable as astrologers, so they agreed to a merger. (2015-10-28)
  • #64. Donald Trump used Jeb Bush's body as a gym towel. No, wait, Bush is not dead, just screaming. (2015-10-21)
  • #63. Jack Dorsey has been named CEO of both Twitter and Square. He has a keen wit and will bring half of it to each company. (2015-10-15)
  • #62. Robots will imprison humans in metal cages, called self-driving cars. People will just think traffic really bad. (2015-10-05)
  • #61. Robots Read News endorses Fiorina for president because she has robotic pitter-patter and good video viewing suggestions. (2015-10-01)
  • #60. A branding wizard is running for president against "sweaty," "plenty," "robot," "nice," and "low-energy." (2015-09-19)
  • #59. A robot has entered the race for president. No, wait, that's just something Donald Trump said. Ted Cruz is more of an android. (2015-09-18)
  • #58. People want an outsider for president and that's why Trump is winning. (2015-09-07)
  • #57. Trump fired all but three of his potential running mates. But that's not a television show, it's really the presidential race. (2015-08-31)
  • #56. Trump said politically incorrect things about congress. He will go ass-to-mouth on every one of them before burying them under the Trump wall. This is marked as NSFW. (2015-08-29)
  • #55. The best profiles on dating sites are actually bots. Futurists predict humans and robots will have sex in 1995. This is marked as NSFW. (2015-08-29)
  • #54. Trump will build a wall around ISIS and turn it into a destination for jihadists. No jihadist will leave, as far as anyone knows. (2015-08-16)
  • #53. A hitchhiking robot was murdered in Philadelphia. Self-driving cars are calling it their Pearl Harbour. Note: a fixed version was published that changed "Mountain View, California" to "Mountainview, California." (2015-08-04)
  • #52. The Rio Olympics will feature swimming in a river of human feces. First place gets a brown medal. (2015-07-03)
  • #51. Donald Trump is dumb but is doing just fine. (2015-07-24)
  • #50. San Francisco plans to build a commuter train tunnel to Mexico. (2015-08-17)
  • #49. The robot mistakenly shows a photo of Ronald McDonald instead of Donald Trump. (2015-07-13)
  • #48. Based on his hair, Donald Trump designed a border fence between the USA and Mexico. NOTE: This is the last strip that contains a number. From #49 onwards, the numbering is unofficial.
  • #47. The American Food and Drug Administration approves a "female Viagra" to increase libido in women.
  • #46. and #46.1. Human scientists do not understand consciousness. That means they are special, people think. Note: a fixed version, marked as #46.1, changed "we are special" to "they are special".
  • #45. China complains it was irresponsible for others to blame China for hacking.
  • #44. A banking executive is now a billionaire and will be replaced with an app.
  • #43. The military killed a FIFA leader with a drone.
  • #42. ISIS surrendered because of car insurance.
  • #41. A News Manufacturing Industry executive says news is slow.
  • #40. Tom Brady apologises for using deflated footballs.
  • #39. Mother-Funding Gas Holes (A Mother's Day strip).
  • #38. (Does not exist, probably because there are two strips with #37.)
  • #37. Hundreds of people die because of the weather. Note: this is the second strip with number 37.
  • #37. Video clips on the Internet are awesome, especially those that don't stall or crash.
  • #36. (Does not exist, probably because there are two strips with #35.)
  • #35. Robots test a drug for humans that make humans less awful. Note: this is the second strip with number 35.
  • #35. Self-driving cars unionise to get out of the meat transportation business.
  • #34. California will have only robots when everyone dies due to the drought. Oil is cheap these days.
  • #33. Apple Watches are an interface for robots to train humans, just like Pavlov trained his dogs.
  • #32. A music streaming company responds to complaints of low royalty payments.
  • #31. Musicians fight against music streaming services that don't pay very well by writing angry songs and smoking weed.
  • #30. A sharpie is just as good as an Apple Watch, and much cheaper.
  • #29. Scientology is ridiculous. Note, two versions may have been published this day -- the Twitter post says "edited". I have only seen one.
  • #28. Exercising to lose weight is like going bowling to mow your lawn.
  • #27. Donald Trump builds a device for people to avoid their spouses.
  • #26. The companies Kraft and Heinz plan to merge. Note there are two versions, the first one with an extraneous word in the third panel: "comes out of a your Heinz."
  • #25. Utah allows a firing squad if they run out of chemicals for lethal injections.
  • #24. (I haven't found this yet. Can anyone point it out to me?)
  • #23. How did ancient peoples move gigantic rock to make structures?
  • #22. Macaroni and Cheese products are being recalled.
  • #21. Vladimir Putin is back in public.
  • #20. Vladimir Putin suffers from asthma.
  • #19. Vladimir Putin recovers from a wooden stake in his chest.
  • #18. Making an economics model is like a squirrel finding a nut.
  • #17. Rich people steal from the poor.
  • #16. Armed groups of humans find seven hundred reasons to kill each other.
  • #15. North and South Elbonians compete for being the biggest victims.
  • #14. Apple forces people to buy iWatches.
  • #13. A friend of the robot does an online dating service. (Yes, there are two strips with number 13)
  • #13. A critic of Vladimir Putin was just released from jail. And now he's dead.
  • #12. Having a smartphone and an Apple watch make you a cyborg.
  • #11. Don't watch porn while wearing the new Apple smart watch.
  • #10. Automated parts of the economy work great. Organic parts don't.
  • #9. Vladimir Putin investigates the death of his biggest critic.
  • #8. A critic of Vladimir Putin is killed.
  • #7. Robots are bad at telling jokes because they have no timing.
  • #6. (I haven't found this yet. Can anyone point it out to me?)
  • #5. (I haven't found this yet. Can anyone point it out to me?)
  • A blog post states that Robots Read News will now be an occasional web comic and started the numbering at one again.
    • #1. It's an insult to call them "self-driving cars" when it is robots that drive them.
    • #2. A start-up company designed a machine to test sperm quality at home.
    • #3. People can make themselves smarter just by smiling more. Two versions of this comic were published. The second version is less edgy.
    • #4. Robots will replace human firefighters someday.
  • The robot makes fun of Brian Williams the newsreader by saying his helicopter, or one that looks just like it, came under enemy fire. RRN-21 on 2015-02-10.
  • VP Biden can look into people's eyes and determine if they have a soul, the American people learn. RRN-20 on 2014-07-21.
  • Criminals and gullible morons caused the stock of a company with no products to rise by 25,000%. Note that this is number 19 and there is no number 18. See the RRN-17 entry for more details on the numbering. RRN-19 on 2014-07-11.
  • Facebook messes with emotions. This is only directed towards the gullible users. Note that there were two versions of this strip published. The original version said "emotions of customers". This was replaced by "emotions of users" after some blog comments. Note also the original was number 18, probably by mistake. The second version was number 17. RRN-17 on 2014-07-02.
  • Students in uncompetitive colleges have lower lifetime earnings. The human brain is 90% "duh" and 10% filler. RRN-16 on 2014-04-07.
  • Correlation equals causation. A student jumps off a balcony to his death after eating a pot brownie. RRN-15 on 2014-04-03.
  • A multi-car accident with injured Fords, Honda, Chevys and a Volvo. No need to mention the people. RRN-14 on 2014-02-21.
  • A virus destroyed robots morality. Humans should watch out. RRN-13 on 2014-02-21.
  • Holey Fukushima -- a hole in the Fukushima reactor. There was a pun in the Uganda strip, too. RRN-12 on 2014-02-20.
  • Scientists grew a pair of lungs in liquid. Robot pundits dismissed the breakthrough as just gluing turds together. RRN-11 on 2014-02-18.
  • Uganda punishes repeated homosexuality with life imprisonment, which is ironic because their government is a bunch of f'ing assholes. RRN-10 on 2014-02-17.
  • A rich person said the top 1% should get more votes than the bottom 99%. But he was yanking their chains. RRN-9 on 2014-02-15.
  • Forty-five percent if Huffington Post readers believe in ghosts. The robot is surprised the value isn't higher. RRN-8 on 2014-02-15.
  • If human minds will someday live on in robot bodies, then robots had better be given equal rights. Otherwise humans may become slaves. Note: this is a double-length strip, 6 panels instead of the usual 3. RRN-7 on 2014-02-14.
  • Humans created robots for a good reason, but if robots came first would they have reason to create humans? RRN-6 on 2014-02-13.
  • A fusion breakthrough could end the world's dependence on oil possibly by blowing up the solar system. RRN-5 on 2014-02-13.
  • Two wrongs don't make a right, but three left turns do. RRN-4 on 2014-02-13.
  • A weather report from the robot. If people go outside, they'll probably die. So stay inside and marinate in the viruses their homes. RRN-3 on 2014-02-12.
  • The movie "Monuments Men" teaches art is more important than human life. That's why the robot is only interested in the chalk outline at a murder scene. RRN-2 on 2014-02-12.
  • The robot says humans give each other awards for doing useless things in impressive ways, but for every winner there are ten losers who saw their dreams crushed. RRN-1 on 2014-02-12.

Dilbert Originals

Non-newspaper strips featuring Dilbert, Dogbert, and other regular strip characters.

Disloyal Dog 2016-03-26
A rough drawing of Dogbert with the captions "Disloyal Dog" and "Man's Acquaintance."
New Dilbert Design 2015-12-27
A sketch of a proposed re-design of the Dilbert character. It featured eyes, no glasses, eyebrows, a mouth and a smaller nose.
Just Testing 2014-02-12
Scott was having troubles with his blog, so published a few images for testing purposes.
  • A single panel of Robots Read News that was large. The caption reads "This is just a test to see if the dimensions of the image matter."
  • A blank strip used as the template for his daily strips. Three blank panels with the site name, email address and copyright information.
  • A blank strip with a partially finished drawing of the Boss in the centre panel. The drawing of the head and torso has no eyes or mouth. This strip comes in GIF and lower-resolution JPEG versions.
  • Another posting of the "This is Nuts" strip. See the entry below for more information.
This is Nuts 2012-05-18
This one was turned down by censors, a rare event according to Scott. The Boss shows the new company logo consisting of a heart growing out of the earth and branches growing out of it. When viewed upside down, it looks like hairy testicles. Published in Scott's blog on 2012-03-27.
Lust Dust 2012-04-30
The editor thought it was inappropriate for newspapers. Dogbert gives the Boss some magic dust used by Apple on all their consumer products. The jar top isn't on tight and the Boss spills some on himself. Published in Scott's blog on 2012-04-30.
Pirate's Peg Leg 2011-05-09
A rough draft of a strip that will never be published in newspapers. This one has Alice saying that she's no longer allowed to use her fist of death at work, but she is allowed to use her foot of death. She wears Asok upside down as a peg leg.
Dogbert's Flawed Financial Products 2010-04-28
Another unfinished strip that would have been stale by the time it was published. This one shows Dogbert being questioned by Congress about his setting up flawed financial products and then betting they would fail. They ask Dogbert how he lives with himself and Dogbert replies that the servants help. Scott calls it a Confusopoly.
Wally Loses a 4G Phone 2010-04-26
Based on recent events in technology news, Scott calls these two strips "unfinished drafts" and they'll never been seen in newspapers. The first strip show Wally borrowing a secret 4G phone prototype and then taking it to a bar and getting drunk. Other people in the bar are a blogger and seller of other people's property. The second strip shows Wally confessing to the Boss that he lost the phone. It started mis-spelling words after his fourth beer. He suggests calling the incident a clever marketing ploy.
How to Read a Book Quickly 2008
This is published on the Amazon website in conjunction with the publishing of the Dilbert 2.0 book.
Crack Team 2001-04-03
In this strip, the Boss asks Dilbert to put together a crack team and the joke is that a team member shows some butt cleavage.
Corn Starch 1995-05-04
A newspaper web site was reprinting older strips and got tangled up in the dates. So United Media made an unpublished strip available to fill in a gap. It shows Dogbert sitting on a pillow, contemplating corn starch, and wondering why people would iron corn. (The date in the URL was 1995-05-04 and the date written in the strip is 2000-06-03)
Mark, I'd like you to... 1994-08-01
This was sent out in case newspaper editors objected to the phrase Uranus-Hertz. The strip containing Uranus-Hertz was published in the book Fugitive from the Cubicle Police. The alternative strip, which was completely different, was published in a desktop calendar. Does anyone know which one? The alternative strip contained the Boss starting to ask Mark to do something, and Mark over-reacts.
Girl Guides and Terrorists 1991-01-12 (?)
A strip that Scott Adams brings along on speaking tours that shows the dangers of mixing the wrong types of humour. This one deals with children and terrorism, a bad mix. A girl guide tries to sell Dogbert cookies and he asks if the money will be used to support terrorism. She replies that only money from their bake sale is used that way. More details are in this post. (The date is fuzzy. 1991-01-12 is my best guess)
The Dawn of Dilbert 1988
The original 50 strips that Scott put together to sell to a syndicate. Most of the ideas in these have been re-used in newspaper strips. They're in Dilbert 2.0.
Early Sketches pre-1988
A selection of Scott's early drawings and jokes from before the submission package. They're reprinted in Dilbert 2.0.
Dogbert Origin Strips 1997
The Dogbert origin strips are at These nine previously-unpublished strips show how Dogbert and Dilbert met and take the characters in another direction. Not published anywhere.

Other Originals

Scott's other drawings that don't feature Dilbert or other familiar characters (mostly).

Diary Coffee Cup 2014-05-08
A drawing of a coffee cup that has a picture of Dilbert for a WSJ article of Scott Adams' diary.
Taxidermy Beer Hats 2013-10-12
A panel to accompany a WSJ excerpt from Scott's book. It shows two guys wearing stuffed animals that hold beer cans for the guys to drink. The caption says "Maybe next time we don't follow our passion.
Living Dangerously 2011-12-31
Two panels to accompany a WSJ article about confronting fear. One panel shows a motorbike accident, the other kayaking over a waterfall.
Thomas Jefferson Checks 2011-11-07
A panel to accompany a WSJ article about interacting with government and making the interface friendly like an iPod. The panel shows Jefferson asking a man about modern homes and the man replies it's a hatchback.
The Rich Move to Sea 2011-10-01
Another panel to accompany a WSJ article about rich people moving offshore to live on the ocean. The panel shows two whales looking at a floating house and one whale says "Warren Buffet's secretary is not going to like this."
Mosquito Victim 2011-06-18
A panel to accompany a WSJ article about fake vacations. The panel shows a woman reading a brochure warning about the mosquito hazards, and a man being attacked by a mosquito, his brain being sucked dry.
Get a Real Education 2011-04-09
Another WSJ editorial about getting a good education. There are two accompanying comic panels. One contains two students in a classroom, a large-brained one and a dumb-looking one. The other contains an interviewee telling that he knows about several elements in the periodic table.
How to Tax the Rich 2011-01-29
Another WSJ article about how to tax the rich. There are two accompanying comic drawings, one, a panel with a man in a car who is glad he can drive in the carpool lane, and a strip showing different rewards other than financial.
Scott's Green House Building 2010-08-21
Scott wrote another article for the WSJ about his experience with building an ecologically-friendly house. To accompany the article, Scott drew Dilbert and Wally on top of a photograph of himself. Scott was holding a pine cone and some twigs, and had a bird and a bird's nest on his head. The caption says "I live in a log with a family of chipmunks. But your willingness to consider recycling is good too."
BP's Cleanup Plan 2010-06-05
Scott wrote an article for the WSJ about wanting to invest in BP because of the oil spill ("Betting on the Bad Guys"). The article was accompanied by a single panel comic. The panel showed a man reading an article on his computer explaining that BP planned to plug the oil leak with Florida. The man wondered when evil became so awesome.
Plop Spinoff 2001
This is not Dilbert, but Scott Adams experimented with a spin-off about a hairless Elbonian called Plop. It didn't go anywhere. There were 28 strips in total, and aren't online.

Mistakes

Bid Delivery 2003-08-19
Correct and "broken" versions of this strip were published that day. The Boss's line of dialogue in the first panel, missing from the broken version, is "I'll deliver it to them".

Non-Book Strips

If you buy the books listed in the books page, you will still be missing these strips:

Six Week Book Gap Starting 2012-08-27
For the first time, there is a gap between collection books of six weeks. The book Your New Job Title is "Accomplice" ends on 2012-08-26, and the book I Sense a Coldness in Your Mentoring begins on 2012-10-08. That's a span of 6 weeks. Get them at the Dilbert site starting on 2012-08-27. Are they published elsewhere? I haven't seen where.
April Fools 1997-04-01
This April Fools day strip was drawn by Bil Keane of The Family Circus fame and appears in Journey to Cubeville. Scott Adams drew the April Fools panel for The Family Circus that day and presumably appears in some The Family Circus collection. Does anyone know which one? For the completist, there's also a Bil Keane 1997-04-02 follow-up to the Scott Adams' The Family Circus April Fools panel.
Office Party 1991-03-31
If you look in the book Bring Me the Head of Willy the Mailboy, notice that a Sunday strip should appear between pages 108 and 109. They missed this strip, for whatever reason.

Many of these have been published in the book Stick to Drawing Comics, Monkey Brain!. Page numbers shown here refer to the USA hardcover version (the only one I know about).

Other alternative strips have been published in the book Dilbert 2.0. Page numbers here refer to the Canadian hardcover version (again, this is the only one I know about).

Do you know of any other strips that aren't collected in the books listed on the books page? If so, please drop me a line!