Nile - Those Whom the Gods Detest
Sanctuary - Refuge Denied
Cirith Ungol - One Foot in Hell
Cannibal Corpse - Eaten Back to Life
Death - Scream Bloody Gore
Vital Remains - Dechristianize
Anthrax - Among the Living
Immortal - Sons of Northern Darkness
Toxic Holocaust - An Overdose of Death
Behemoth - Demigod
Amorphis - Tales From the Thousand Lakes
Iced Earth - Iced Earth
Arkona - Goi, Rode, Goi
High on Fire - Death is this Communion
Just a few of my favorites from various sub-genres.
A bunch of people already said a lot of the ones I would have put on this list.