Dethklok is metal.
I really have too many diverse bands I
.
Aging now: Depeche Mode, The Cure, NIN, Garbage, Smashing Pumpkins before Corgan went Baldy McGothface, Bush, Tool, Toadies, Pearl Jam, Poe, Portishead.
Newer stuff (<15): Evanescence, Staind, Paramore, Muse, Florence + the Machine
Unexpected stuff: Epica, Insomnium, Blind Guardian, any dubstep remix of anything. Drop the bass, aaaaaw yeeeah.