CAA: Christian Anime Alliance

This band is the BOMB! It was recommended in EGM, so I tried 'em, and LOVED THEM!

http://www.theadvantageband.com/

This guy does some sweet stuff, too...

http://www.nino.com.br

I listened to The Advantage, and they are quite good. I especially liked the Bubble Bobble song, as it is almost identical to the original.

http://www.ocremix.org has some cool remixes. I recommend Super Metroid's "Four little Metroids"

www.metroidmetal.com takes the original game and does the music in metal!