Saints Row 2 suprisingly had a couple of metal gems for such a 'gangster' game. Hell, the only complaints I have against it tend to be trivial..
Anyways, show and tell time.
Hums - Stars
Machine Head - Message in a bottle(cover), The blood the sweat the tears, davidian, Old, Imperium, A thousand lies, Halo, Crashing around you, Aesthetics of hate (Big machine head fan here)
Rage against the machine(On a machine roll here, bare with it) - To many songs to count, if you don't mind rap vocals.. The guitar work is superb.
Machinae Supremacy - Through the looking glass, overworld
The offspring - Go pick a song, listen to it, any one of theirs are great practically.
Rammstein - Du hast, ich will, mein teil, keine lust
Muse - Uprising
EDIT: Chicken..motherfucking..foot. Chickenfoot. Seriously, the name might sound retarded but they're a relatively competent group whom just put out an album not to long ago. One their tour stops happened to be in my area when I first heard of the.