hmm.. of the top of my head... (i know i'm going to forget alot) bolded are my favs

slipknot
korn
mudvayne
linkin park
motograter
cradle of filth
disturbed
kittie
a perfect circle
apartment 26
breaking benjamin
cold
course of nature
deftones
diecast
drowning pool (until dave williams died..)
dope
element eighty
flaw
meshuggah
from zero
ill nino
some of kmfdm
lo pro (from what i've heard so far)
puddle of mudd
nickelback (when i feel like something more sappy and soft)
rob zombie
sepultura
socialburn
soil
soilwork
spineshank
stone sour (murder dolls just fucking sucks, and for those who don't know, both these bands were created by members of slipknot stone sour is corey, the singer, and murder dolls was made by joey, one of the drummers, one of the more popular drummers)
system of a down
ten years
three days grace
trivium
trust company
nirvana
evanescense (she is fucking beautiful and her voice is intoxicating)
adema
arch enemy
as i lay dying
atreyu
crossbreed
godsmack
hate breed
lacuna coil
taproot
tantric
tool
staind
skinlab
orgy
pod
scars of life
smile empty soul
seether
nightwish
kidney theives
metallica

this would probably be a good time to state, i'm not much for old music.... i actually 'hate' alot of it.. just not my tastes...