Frogstar http://frogstar.com/aybabtu/index.asp
A huge collection of All Your Base Are Belong to Us images and videos, along with a detailed history of the fad. Also features funny pictures and original sketch comedy.
Xenophilia http://www.xenophilia.com/
Offers a collection of visual humor, odd sightings, music, hoaxes, and strange ideas. Includes information about the band Xenophilia.
Jokaroo http://www.jokaroo.com/
Offers a huge collection of video, Flash, funny photos, cartoons, games, and e-cards. Features a forum and search.
eBaum's World http://www.ebaumsworld.com/
A huge world of media. Features funny videos, flash cartoons, games, photos, jokes, and pranks. Warning: can be shocking, gross, and in bad taste but that's the point.