In this video, you will see a man sit down to play some Mega Man II. You'll also see a band. What you should then notice is everything getting kind of awesome.
The player is Noah McCarthy, and he can beat anything you put in front of him. The band is Bit Brigade, who while Noah is strolling through retro games play the soundtrack to those games, live. Level by level. Synced to his progress.
Bit Brigade have been kicking around for a while now, and if you've been to a show like MAGFEST, you've probably already seen the magic. If not, the above clip will give you an idea what's going down.
Bit Brigade [Official Site]