Hm, some of my favorite soundtracks include:
Silent Hill - The movie and the games all have an excellent, very eery soundtrack. But in a way, it also kinda sounds like scary porno music.
If that makes sense. You'd have to listen to some of it to understand what I'm talking about, I think. But my favorite Silent Hill song is "Room of Angels" from the fourth game. I forget who sings it, Mary Elizabeth something-or-other.
Phantom of the Opera - The PotO with Gerard Butler in it!
Excellent tunes!
RENT - "Today for You" Is like, the best song ever. xD
Kingdom Hearts - Both games 1 & 2. I like the techno-remix of "Hikari" from the first game, and the piano version of "Passion" from the second the most. The Japanese version of "Swim This Way" and "Under the Sea" from the second game are just epic, too.
Some bands I've recently discovered are:
Kill Hannah - I've only heard their song "Lips Like Morphine" but it's really good if you're into rock. The lead singer is a guy, by the way. Lol.
Breaking Benjamin - Yeah, I know they've been around forever, but I'd never actually heard anything by them until a few weeks ago. I love "Diary of Jane".
Coheed and Cambria - A rock band that bases their albums off of a comic book written by the lead singer. Their song "Welcome Home" is on Rockband 1, and is good.
Uhhh...that's all I got for now!