Of all the great game sound tracks from the 8 & 16 bit eras, the Turtles In Time soundtrack is always something that stuck out to me.
http://www.youtube.com/watch?v=4vbYwdlPAUc
The Bully soundtrack was also one of those soundtracks that made a good game great. But for some reason, the first time I played it, I expected the band "The Phenomenauts" to have music in it, and I'm not sure why. Although some of the music in the game did sound similar to what they played.
http://www.youtube.com/watch?v=mFLn2fpO-68