This band played at the anime convention as my school and I can't stop listening to their music now. There isn't a lot out, but that's okay, they're still awesome.
They take (generally) old video game soundtracks and turn them into heavy rock (most, anyway. There's a section of a Zelda song that's rather jazzy). They've down some Super Metroid, Megaman 3, Final Fantasy VII, Zelda, Techmo Super Bowl, some Mario and Ghost Busters.
There's also a radio interview with two of the members recorded on their webpage (
www.armcannon.com). They have one album out labeled Leg Vacuum (I can't get over the irony of the album title) and a second one close to completion but still untitled.
....did I mention I'm absolutely in love with this band?