I love soundtracks C:
The Sky Crawlers - Main Theme:
[link]Zan Sayonara Zetsubou-Sensei - Main Theme:
[link]Pandora Hearts - Will:
[link]Toradora! - Lost My Pieces:
[link]NieR - Song of the Ancients (Popola or Fate version) too lazy for link
Okami - Reset: Thank You Version:
[link]Sword and Sworcery - Lone Star:
[link]Silent Hill 2 - Theme of Laura:
[link]Princess Mononoke - The Legend of Ashitaka:
[link]+anything from Kingdom Hearts
+the movie Paprika also has a very interesting soundtrack
...just to name a few