Zelda soundtracks in general are fun to listen to, but Wind Waker is plain incredible.
Legend of Zelda - A Link to the Past
Yesss.
Game(s): Fallout I-II
Yesss.
The Last Remnant
Yesss.
Touhou. THAT IS ALL.
God yes.
None can really compete with Tohou when it comes to variety, but that's because it's a long game series, and it's a doujin. You have millions of fans making tens of thousands of songs in its honour. Just amazing. I have hundreds of favourites. This is one; it's the best lyricless metal song of all time:
You can also find lots of great games for music on this playlist. It gets randomly updated now and then:
http://vip.aersia.net/vip.swfShining in the Darkness, James Pond 3, StH to Sonic & Knuckles, Skies of Arcadia, MGS, Metroid, Tales series, Turok, Red Alert, Ace Combat, Shatter.. my life has been filled with video game music since I was a kid :>