Just skills!

One guy, both hands and IKARUGA chapter 3:

http://www.youtube.com/watch?v=AEkS1...layer_embedded

Insane Super Meatboy:

http://www.youtube.com/watch?v=5McCw...embedded#at=94

Beating Tertris!!:

http://www.youtube.com/watch?v=8kqKO...mbedded#at=371