The Legend of Zelda: Ocarina of Time
Metal Gear Solid 4
Sonic The Hedgehog 2
The Neverhood and Skullmonkeys games - These are quite easily the best soundtracks ever. I have both games.
Support the artist and buy Imaginarium: songs from the neverhood (includes both soundtracks from neverhood, skullmonkeys as well as boombots) from
Street Fighter 4
Extreme-G (Techno and trance):
Extreme-G 2 (Drum and bass-ish):
Castlevania 2 Simon's Quest - Bloody Tears:
Bloody Tears awesome cover on guitar:
Chrono Cross "Scars of Time"
Mass Effect 3 - A Future For The Krogan (Vocals by Lisbeth Scott, who also did vocals for Here's To You used in MGS4)
Earthbound - Pokey Means Business