I've only seen twenty-nine of those... So, it seems I have yet to live. D: I think this means I'm technically posting from the future... =3
Among the ones of those I've seen, The Flying Spaghetti Monster, Dramatic Chipmunk, Fail Blog, I can has Cheezburger, and Billo the Clown Flips Out are my favorites. XD
Edit: Just watched the "Gay Mount Everest" video, because I was wondering how a mountain could possibly be gay, or even have a sexual orientation in the first place. It was hilarious and educational; I really never knew that the words "blind" and "gay" were synonymous. =3