i mainly listen to 90's metal/rock with some newer stuff also

Ministry
Slayer
Pantera
Machine Head
Fear Factory
Sepultura/Nailbomb/Soulfly/Cavalera Conspiracy
Napalm Death
Prong
Anthrax
Carcass
The Haunted
Killswitch Engage
The Dillinger Escape Plan
Black Label Society
Static-X
Meshuggah
Nine Inch Nails
Biohazard
White Zombie/Rob Zombie
Faith No More
R.A.T.M
System Of A Down
Alice In Chains
Guns N' Roses
Queens Of The Stone Age
early Metallica (up to ...And Justice For All anything after that = poo)

and a crap load more including some hip hop,techno