Ok this is as many as I could recognize. Few things I had no clue what they were. (Like that guy who looked like Mathew McConaughey at the switchboard, and those dancing animated things). Dang I'm bored right now.
Numa Numa - http://www.youtube.com/watch?v=muP9eH2p2PI
Dramatic Chipmunk (even though it's really a gopher) -
Nunchuck Guy - http://www.youtube.com/watch?v=HIvWASpK9aQ
Diet Coke + Mentos -
GI Joe PSA's -
Most T-Shirts worn at once -
Chris Crocker (I hate this guy) - http://www.youtube.com/watch?v=kHmvkRoEowc
All Your Base Are Belong To Us -
Miss Tean USA -
Ryan vs Dorkman (light sabre references) -
Evolution of Dance -
Chocolate Rain -
Daft Hands -
Daft Bodies -
Rainbow Socks -
Kelly Videos -
Lighsaber Drumsticks - http://www.youtube.com/watch?v=pziDsnBZANY
Peanut Butter Jelly Time -
Will it Blend -
Charlie the Unicorn -
Sneezing Panda Cub - http://www.youtube.com/watch?v=4R6vMPYR1vo