I really like Motoi Sakuraba's stuff.
There's so much good stuff to choose from, but...
Castlevania series (especially the earlier ones)
Mega Man (1-3, in particular)
Zelda series
Chrono Trigger
Earlier Final Fantasy games
Most of what I listen to consists of remixes, of course. The Dwelling of Duels, in particular, quite literally rocks. And I think Sixto Sounds puts out some incredible mixes (both individual and collaborative. And the Unchosen Paths project by goat is awesome as well. Scourge of 1691 is still one of my favorites.
http://dod.vgmix.com
http://sixtosounds.com
http://www.powergoat.com