Irritabiltiy

Penny Arcade isn't the only nerdy webcomic on the 'Net. My other favorite is Irritability. It used to be in a Texas university newspaper, but now the author only makes a new one when he feels like it (he's only done three this year). Not as consistent as PA's 3-per-week, but still welcome when one shows up out of nowhere, although he claims to update "most Mondays." If you haven't seen it before, it stars a Dragonball Z-like character named Chappy Chappy and other adventurer-types that have wild, often incredibly geeky, antics. There are over 700 comics in the archives here, but they don't start getting really funny until a few months in. Some are just lame puns, some are classic video game or D&D references, some are just off-the-wall weird. It interested the world to the term "ho-bag" and was the first place I ever saw head legs, long before Futurama ever used them as sewer mutants. Check it out if you have a few hours to kill on a lonely, rainy afternoon.

Here are a few of my favorites:
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Petroid Arrives
There's more... but I can't find them now. You do it!