every f-zero game, obviously. it's not rock, its rawk!
sonic riders. i know, but still. fast, heavy, rave-ish beats? hell yes.
metroid prime. i haven't played any sequels, but some of prime's music was beautiful
legend of zelda. ocarina, majora, and wind waker. all iconic, and wind wker had dragon roost island.
halo. the original halo. it's got a bunch of good ones.
halo 2. OXM had to change their pants when they listened to its soundtrack. when i got the game, i found out why.
halo 3. because of that fanfare in the trailer ^_^
morrowind. because they bring back memories of an ill-spent childhood, and it's really good easy listening, or for ambiance.
and many others, but im bored of typing now.