Jimmy Sullivan- stage name The Reverend (Tholomew Plague). You can argue all day about how Avenged Sevenfold sucks, but you can't argue that he was one of the greatest rock drummers of the 2000's. Found dead in his home on the 28th of December 2009. The details of the cause of his death haven't yet been finalized and/or released.
On a more personal note, he is one of my biggest influences, and I don't even play drums.