I'm glad so many of you like Lamb of God, but come on....Wrath? That album sucked. Ashes of the Wake and As the Palaces Burn are incredible, though.
I listen to a mix of fusion jazz and metal. Meshuggah, Car Bomb, Yog, Sleep Terror, Tribal Tech, Mahavishnu Orchestra, Ohm, Dillinger Escape Plan, and so forth.
And for those of you into dubstep, you guys should check out Deadmau5 and Rusko. "Woo Boost" by Rusko is effing great.
Really I listen to way too much music. I guess that's what happens when running a studio is your main source of income.