I'm more of a Pantera/Slayer kind of guy... download Pantera "Far Beyond Driven" and "Vulgar Display of Power" and for Slayer get "Seasons in the Abyss, South of Heaven, Diablous in Musica and God Hates us All."
I listen to these when I run or workout and I don't really think about being tired... I don't know it helps me get through workouts easier... but that's just me.
Can never go wrong w/ some Cannibal Corpse "Tomb of the Mutilated, Bleeding" or some Slipknot.
