Slayer

The darkest, heaviest, most brutal fucking thrash band to have ever struck the face of God's green earth with pure bruality. Capable of pounding out the most coolest, creepiest and most Satanic lyrics that don't actually oversaturate their image to a point of being laughable (see Deicide). Founded by Kerry King and Jeff Hanneman back in the early 80s, their influence upon the thrash movement is undisputed, with albums like "Reign in Blood" and "Seasons in the Abyss" ranking as the most influential and famous thrash albums in record history. As far as this author's concerned, Metallica don't fucking deserve to be considered the backbone of thrash. Metallica sold out and changed, but Slayer never did. They didn't compromise their sound for fucking anybody, and to this date, they've remained sheer volume and pumelling riffs that totally kick the shit out of all but the heaviest of Death metal. To date, their most recent album is "Christ Illusion"; another brutal masterpiece that illustrates how well they've stuck to their roots. "Catatonia" has a guitar solo that's to die for. Quite literally if you're ears are too weak to handle the overpowering bad-ass-itude of Slayer's music (and no, that wasn't a real word, so don't bother looking it up on UD).