Nintendo. The original..

I found a band called Anamanaguchi. They have a full CD called Dawn Metropolis that is probably the most UNIQUE listening experience of my life so far. They use a hacked Nintendo to do the music, so the songs sound like a cross of Ratatat (look them up) and Mario Brothers. Really cool stuff, if you want to relive the typical childhood of a child of the 80's. If you were born in the 90's, put on Saved by the Bell, slap a "Kevin Loved Winnie" Wonder Years shirt on, and listen away.

More about the band and some song samples can be found here:

http://anamanaguchi.com/

and

http://www.dawnmetropolis.com/
This one has some really cool visuals too.