Nintendo games have good soundtracks, despite the association with kiddy games. Stuff like Zelda, Mario and Metroid always have good music.
The Castlevania games also have some good tracks, Konami have some talented people. Metal Gear Solid games have epic background songs. Chrono Trigger, despite being a 16 bit game, had some beautiful music. Ikaruga, Okami and the Persona series all are relatively unknown but well done.
Also love the soundtracks from Uncharted, Resident Evil 4 and Street Fighter.
You looking for specific tracks?