Yeah, Jesper Kyd absolutely knocked it out of the fucking park on this one. The game itself is great, but God the soundtrack adds so much to the experience. It's impossible not to get hype when you hear Disposal Unit, Immortal Imperium or Imperial Advance kick in. Combine that with the insane number of enemies the game throws at you in Damnation tier missions and it's just a hardcore adrenaline rush.
Also, just wait until you get your hands on the heavy stubbers, or the grenade launcher. God the Ogryn weapons are the best.