Donkey Kong Country 2 Soundtrack (and a bunch of other DK music as well). This was the second game I ever owned and it has an amazing and fitting soundtrack. I've also been listening to a few other soundtracks as well, mostly SNES: Kirby Superstar - Virus Theme: A pair of great games that had really amazing soundtracks to back them.
I'm not too familiar with it, but have you ever heard of a genre called Chiptunes? If you love video game music, it might be right down your alley. Also, if you like the music to Kirby's games, you might be interested in checking out Kirby's Dream Collection. It actually comes with an audio CD chock full of music from the series.
I do listen to 8-bit remixes from time to time, although I've not really listened to anything original. As for the Dream Collection, I bought it back when it came out and absolutely loved it and its CD. One of the best game compilations out there with a lot of history about the series and went well beyond having a few emulated games on a disc.