TEN THOUSAND FISTSIt started in 2000 with "Down with the Sickness." Disturbed's thick, rhythmic take on alt metal was perfect music for stalking bloody zombies, and vocalist David Draiman's jaw snapping Pavlovian grunts made the trigger fingers of first person shooters itch. There were threads of other groups in the sound Pantera's wrenching power, Slipknot, the ill lighted parlor games of Tool but Disturbed held their own from the start. If 2002's Believe downplayed