Check out this band, they are absolutely KICK ASS! :D

http://www.myspace.com/vgmetal

Tetris, sonic and mario are my favs :D
I have both their albums, thought i should notify you guys of their awesomeness, hehe :P

-Rich-

They're pretty good ! I love this kind of stuff.

I also checked out Arm Cannon who seem pretty decent as well.

http://www.myspace.com/armcannon

However the best I have ever heard are the minibosses :

http://minibosses.com/

AND Goat !

http://www.powergoat.com/page3.html

This guy makes insane quality remixes of songs, especially Castlevania.

Check em out !

Haha, nice! :P

-Rich-