RPG Humor Links
Not all of the links on here are really *directly* RPG connected, for instance, "Goats" isn't exactly focused on role-playing, but most of the gamers I know are amused by its twisted sense of humor, and occasionally the characters indulge in an evening of "Dungeons and Hamsters" ("Roll a 12-sided hamster"). Everything on here at *least* mentions RPGs once in a while, so trust me, I wouldn't reccomend it to you if it wasn't good.
John Kovalic is *god*!!! He's best known for his comic strip, Wildlife, which typically deals with technology, but his *coolest* stuff (IMHO) is published in his comic book "Dork Tower"....it's a must read for gamers. I have an autographed copy of #6 that Jester got me at GenCon, which is a prized possession of mine!
Goats is a comic strip. RPG refences, Star Wars references, odd....sort of....a more "adult" MST3K sense of humor.
The Brunching Shuttlecocks Homepage. Probably the best overall humor site I've ever seen; pay special attention to the ratings.
Everyone knows FoxTrot! I know actual roleplaying doesn't come up much (if ever, I don't remember really well) but I'm too much of a geek not to list it.