Depends what you like, I love every music genre so:
Dubstep: Ellie Goulding - Starry Eyed (Jakwob Remix)/ Mt Eden - Sierra Leone
Drum and Bass: The Qemists - Lost Weekend/ The Qemists - When Ur Lonely
Alternative: Feeder - Seven days in the Sun/ Yellowcard - Breathing
Metal: Metallica - Seek and Destroy/ Machine Head - Imperium
Chillout: Layo and Bushwacka! - 2mrw/ Layo and Bushwacka! - Love Story
Halo Soundtracks and Mass Effect soundtracks are also top notch, oh I don't know! So many choices!
Dream Theater - "Sabre120 and Jongleur officially win. That is all."