Tenacious D

Easily the greatest rock band ever -- at least according to members and actors Kyle Gass and Jack Black -- the Dio-loving acoustic metal/comedy duo Tenacious D is an unlikely success story. The sheer charisma, humor, and inspired songwriting of Black and Gass (aka JB, Jables, KG, and Kage, among other aliases) took them from L.A.'s underground co...