AwesomePeanutz said:
Ah I remember that one, spooky as hell.
More you may want to take a look at, though I do not know the names of them:
Metro 2033 theme
Deus Ex theme
The music during the One Shot, One Kill level of Call of Duty 4
Various Call of Duty Finest Hour music
Hitman Blood Money theme (already mentioned, its bloody brilliant)
Dawn of War has some cool music
Brother In Arms Hells Highway theme
Company of Heroes music, theme in particular
Stalker SoC theme
Also, Stalker has this weird ambient music, Call of Pripyat in particular its hard to describe, though I'm not sure how much of it really is music because theres so much stuff you can hear that is actually happening in real time throughout the game world.