Lollipop Chainsaw has my vote.
Akira Yamaoka and Jimmy Urine, that's all I need to justify.
This one from Sleeping Dogs!
Tales of Graces F yep the f is in the games title but anyway the games soundtrack is absolutly amazing i spent a month after completing the game listening to its soundtrack.
Yeah I gotta agree with the JonTranny and say FTL, the atmosphere it builds with that soundtrack is just beautiful.