Who doesn't love the occassional tasteless joke? Here are some archives of dirty jokes, and remember, they're funnier when you're drunk!
The best dirty jokes on the Web!
The Nasty Joke Page
Mefco's Random Joke Server
Sex jokes, dirty limericks, Humor - The Adult Chef
Mildly Amusing Area - Bags of Jokes (rude, crude, silly, nasty, nerdy, etc)