Metallica
Slayer
Pantera
Megadeth
Sepultura
Immortal
Cannibal Corpse
36 Crazyfists
Children of Bottom
Machine Head
Although Soundgarden is totally awesome, they are not metal. Just hard rock, or if you want to really stretch it, you can call them grunge (only because they are from Seattle).
Marilyn Mason got some heavy riRAB, but he's just goth rock.