Dimmu Borgir
Amon Amarth
Chimaira
Iron Maiden (not necessarily heavy metal, but metal)
American Head Charge
All that Remains
Black Label Society
Bullet for my Valentine
Revenant
Children of Bodom
Damageplan
Denounce his name
Drowning Pool
Gwar (some. namely War Party)
Lordi
Hatebreed
Killswitch Engage
Lamb of God
Megadeth
Mudvayne (some)
Pantera
Powerman 5000
Raamstein
Rob Zombie
Saliva
The Smashing Pumpkins
Spineshank
Static-X
Tool (They're borderline metal. most metal heads end up liking them)
... that should get you through for a while. This list spans from light metal to heavy metal to screamo metal. Enjoy.
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