Personally I like this one:

P.S. Do not hotlink the cartoon without the site's permission please.
Personally I like this one:

P.S. Do not hotlink the cartoon without the site's permission please.
I wrote a production website that has the path /dev/random/ return 4 because of this comic.
('Are you stealing those LCDs?' 'Yeah, but I'm doing it while my code compiles')
I have this one pinned to the wall facing the entrance to our office :)
I knew it was true. XKCD #224
"We lost the documentation on quantum mechanics. You'll have to decode the regexes yourself."
Dilbert is the top favorite, but I've also really enjoyed the xkcd comics the last couple years. I've got a couple of those posted up in my cube... I try really hard to live by this one.

https://brainstuck.com/2008/08/08/t-c/
I'm guessing that this would probably never happen, as agreeing to the terms and conditions is more important than actually reading them (from the software publisher perspective).

("40% of OpenBSD installs lead to shark attacks. It's their only standing security issue.")

Quite demonstrative of why metric based incentives and engineers don't go hand in hand.

While not specifically about programming per se....wanting to program games is what got me interested in IT in the first place....
anyway this one made me laugh so hard when I saw it!
Here's a new one from Dinosaur Comics:
ladies and gentlemen: mr. stack overflow! http://www.qwantz.com/comics/comic2-82.png
Another great Foxtrot comic. Possibly the most incomprehensible-to-non-geeks comic to sneak into the newspaper funnies.
alt text http://www.unt.edu/benchmarks/archives/2004/february04/screwupcolor.gif
This is my everyday.
alt text http://www.phdcomics.com/comics/archive/phd101305s.gif
alt text http://www.phdcomics.com/comics/archive/phd101505s.gif
alt text http://www.phdcomics.com/comics/archive/phd101705s.gif
According to http://homepages.strath.ac.uk/~cjbs17/computing/binary.html author of this image is Chris Kania and original is at http://www.kaniamania.com/html/1190.html but the entire site is down at the moment.
Made for grad students, but applies equally to programmers
alt text http://www.phdcomics.com/comics/archive/phd012609s.gif
"Emacs Thumb" from User Friendly
Emacs Thumb http://www.userfriendly.org/cartoons/archives/07sep/uf010710.gif
My all time favorite is probably xkcd's "Sudo make me a sandwich" comic, but there are SO MANY good webcomics out there that I thought I'd throw some others out for fun:
A co-worker pointed me to Sticks and Stones, which just got started pretty recently. It's sort of an xkcd ripoff, but there's some good stuff in there. alt text http://www.arcanology.net/sticksandstones/comics/comic-10.gif
Hackles is frequently about programming. This one's probably my favorite: Hackles, by Drake Emko & Jen Brodzik http://hackles.org/strips/cartoon334.png It's not quite a programming comic, but I also really dug this strip from Full Frontal Nerdery:
Full Frontal Nerdity by Aaron Williams http://nodwick.humor.gamespy.com/ffn/strips/2008-03-12.jpg
I can't believe 6 pages of answers and no one mentions the banana jr 6000. How quickly we forget.
http://img17.imageshack.us/img17/3108/bananaadgz4.gif
The other one I love and couldn't find the image for has the punchline "Failure Mr. Jones, is hardly original. Now sit down."
Also from the Bloom County strip.
What?! No PhDComics? Check this out: alt text http://www.phdcomics.com/comics/archive/phd1112.gif
Remember this was 1997!!
Also read the following strips... Hilarious!
http://www.irregularwebcomic.net/75.html http://www.irregularwebcomic.net/comics/irreg0075.jpg
Edited for grammar :P
http://cache.g4tv.com/images/ttv/graphics/thescreensavers/3546989.jpg alt text http://cache.g4tv.com/images/ttv/graphics/thescreensavers/3546989.jpg
alt text http://wondermark.com/comics/128.gif
(guess you have to work on sev zero bugs to get this one)
Dilbert http://www.laputan.org/images/pictures/elbonia-900406.gif
This is something I found reading about anti-patterns.
This is old, I'm totally not sure about the permissions and I'm ready to remove it.alt text http://img120.imageshack.us/img120/8456/easycfm4.jpg
I think the IT consultant's image is the best:
Reasons why people who work with computers have a lot of spare time
(linking because the picture's pretty big)
Ten reasons you know you're living in 2009
For an Agile shop ... THIS is fantastic... As a dev, it just speaks volumes.
Great Fun: from Implementing Scrum by Clark & vizdos.

There's a Russian version of Bash.org at Bash.org.ru. What they do now is they take favorite quotes and turn them into cartoons or comic strips. Here's one of my favorite ones: Tester http://s.bash.org.ru/img/67c5y2emi7vwmrnd263759.jpg
We've got a clever tester now -What do you mean?
He's found bunch of stuff... A funny symbol there, a weird key combination here. He's real good
But sometimes... I really want to smash his face
Link to site: http://bash.org.ru/comics/20080111
alt text http://www.geekherocomic.com/comics/2009-08-03-hardcoded-limits.png
Was I can do stackoverflow in a weekend the inspiration for this cartoon?
Tragically, my favorite cartoon is too old to be on the interwebs.
It's from Datamation. (Remember Datamation?) A man is sitting at a desk. There are bits of electronics everywhere. Rubble is strewn into every corner of the room. His face and hair are singed.
He is thinking "It's never done that before."
The Contiki Strip
A comic set in a small Norwegian software company. All text in English. Check it out at http://contikistrip.kjempekjekt.com
Contiki Strip http://contikistrip.kjempekjekt.com/images/contikistrip5.png Contiki Strip http://contikistrip.kjempekjekt.com/images/contikistrip7.png
in which we discuss the philosophy of computer science and programming architecture by the seemingly-defunct Standard Out:
For those who have worked at Accenture www.bigtimeconsulting.com has some awesome ones...
Here are just a few: