The nintendo classics (Mario, Zelda, Metroid) always have some good music, even in the 8-Bit era.
Nowadays I particularly like FF7's, 8's and 9's.
Tales of Symphonia and Tales of Vesperia have really good soundtracks too.
Oh and Baten Kaitos (check it out, it's awesome) has the same composer as the two tales games and so it has an awesome soundtrack.
On a non-rpg front, the last games' soundtrack that I really enjoyed was Bayonetta. They mostly play one main song, but man it drills into you and I can guarantee you will be humming it by the end of any play session. The angelic music in the game is pretty awesome too.