Jack Black

Thomas Jacob "Jack" Black (born August 28, 1969) is an American actor, producer, comedian, voice artist, writer, and musician. His acting career has been extensive, starring primarily as bumbling and cocky but internally self-conscious outsiders in comedy films, though he has played some serious roles. He is best known for his roles in High Fidelity, School of Rock, King Kong (2005), Nacho Libre, Tropic Thunder, Bernie, Kung Fu Panda, and Kung Fu Panda 2. Black is a member of the Frat Pack, a group of comedians who have appeared together in several Hollywood films, and has been nominated for two Golden Globe Awards. He is the lead vocalist of the comedic rock group Tenacious D, which he formed in 1994 with friend Kyle Gass.

source: Wikipedia