Deus Ex Human Revolution, it fits the cyberpunk mood to the game:
[link]Borderlands 2 mixes in redneck, furturistic, a bit of dubstep, and rock into it's soundtrack:
[link] [link] [link]The Binding of Issac and it's expansion pack has intresting music:
[link] [link]The Darkness has some badass metal going on:
[link]Killer7 has some crazy, heroic music. Especially this one:
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