1. Little Superstar
This one video alone justifies every second of programming or coding it took to get Youtube out to the world. No number of pathetic teenage girls dancing "provocatively" to hip-hop music could ever possibly outweigh the awesomeness of this single video. It has helped me to regain my faith in humanity and made me reconsider my belief in god.
The Rasterbator is a nice way to create giant wallsized poster art for your college dorm room.