Jon Philip Theodore (born December 30, 1973) is an American drummer. He is best known as a former member of The Mars Volta and as the current drummer for Queens of the Stone Age. Theodore is also a member of One Day as a Lion and hard rock supergroup Giraffe Tongue Orchestra.Known for his explosive, multi-textural playing style, Theodore was a member of both Golden and Royal Trux before joining The Mars Volta in 2001.