chuckywang
Lifer
Off the top of my head, it has to be this dude playing 2 player Ikaruga by himself using both hands at the same time. Freaking unreal, this game is hard enough already. I can't imagine getting good enough to do anything like this:
http://www.youtube.com/user/kyuuball#p/a/u/2/ToBdzV7w5Pc
http://www.youtube.com/user/kyuuball#p/a/u/2/ToBdzV7w5Pc