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Foxtrot comic strip
FoxTrot is a comic strip with attitude, wit and a big dose of reality.
Geekcomix features a number of daily comic strips, all with "geeky" themes (such as open source, Linux, science, etc.).
All Linux Humor. All Copied Mottos. All the Time.
Linux and Computer Comics
This is a small collection of some GNU/Linux and computer comics/cartoons that have found on the web.
Linux Cartoons is a collection of humourous, semi-humourous, and JUST PLAIN WRONG images about Linux.
xkcd is a webcomic of romance, sarcasm, math, and language.