The Onion : America's best online satire

Comic Book Periodic Table of the Elements : The importance of the elements in the graphic arts

Stress, by Jim's Big Ego : Quite possibly the funniest music video ever (Flash)

Lawyer Joke Emporium : Extensive archive of lawyer jokes, indexed by topic

Weirdest of the Web : Looksmart's index to some strange and funny stuff

Target: Osama bin Laden : Hell, when things get bad, you may as well make fun of them

Squirrel Fishing : An oldie but goodie

Cat-Scan : Exactly what the name says. Be sure to check out the archive.

Batemanimation : Great political and social satire (Flash)

Dilbert's Salary Theorem : The reason you aren't paid more

The Internet Help Desk : They'll make you go through a free sign-up to download the mp3, but it's worth it!

Anagram Genuis Server : Type in a string, they'll email you a list of anagrams

Hydrogen Oxide, Liquid (synonym: water; formula: HOH) : Another oldie but goodie

Made with Beats, Love and Caffeine: Just a happy little video

The Dialectizer : Give it a web page or some text, and it will translate to Redneck, Jive, Hacker, and more