found this by accident tonight and I was laughing my ass off. This site is a parody of wikipedia (still under construction) complete with the Jerry Seinfield Interstate Highway System. They even had photos of road signs (obviously photoshopped) with Fuckingham and Fuckhouser (obvious parodies of Effingham and Funkhouser signs).
its at http://uncyclopeida.wikia.com
http://uncyclopedia.wikia.com/
Correct link.
Some articles are nearly entirely factual, but about shite that wikipedia won't allow: http://uncyclopedia.wikia.com/wiki/Boldrewood_Tunnel
This one is also fairly un-unencyclopedic too: http://uncyclopedia.wikia.com/wiki/Interstate_99
It's been around for a while. Their article on "Sexual Innuendo" is another good one to check out.
Uncyclopedia is a combination of the parodical satirical media: Mad Magazine and the Onion, to spoof of the world we live in in an encyclopediac style, but without the ED/4chan stuff known to push the limit on what's morally acceptable.