For me it's mostly alternative, metal, and aggrotech.

A few random bands"
Godsmack, Disturbed (old stuff, like the Sickness album), Atreyu, Lamb of God, Lydia, Emery, Underoath, Chevelle, NIN, Korn, Psyclon Nine, Unter Null, Rammstein. and many more

Anything that makes you go: haha!