man, you people are throwing in death and black metal and shit. bet he doesn't like that. I know you like some metallica stuff so i'll try keep it like that...
First, I'll whore some max cavalera stuff.
Sepultura - Manifest, Desperate Cry, The Hunt
Nailbomb - Religious Cancer, Vai Toma No Cu
Soulfly - Tribe
now for other stuff
Snot - Snooze Button, Snot
Black Sabbath - Killing Yourself To Live, Symptom of the universe
break you in a bit easier than some of these guys