Thomas Jacob "Jack" Black (born August 28, 1969) is an American actor, comedian, and musician. He makes up one half of the comedy and heavy metal music duo Tenacious D. The group has two albums and a full-length film. His acting career is extensive, starring primarily as bumbling, cocky, but internally self-conscious outsiders in comedy films. He is a member of the Frat Pack, a group of comedians who have appeared together in several Hollywood films, and has been nominated for a Golden Globe award. He has also won an MTV Movie Award, and a Nickelodeon Kids Choice Award.
Black was born in Santa Monica, California, the son of two satellite engineers, Judith (née Cohen) and Thomas William Black. His mother worked on the Hubble Space Telescope. Jack Black's mother is Jewish and his father converted to Judaism; Black was thus raised as a Jew. On The Tonight Show he said his surname may come from the Scottish occupational name Blacksmith. His parents divorced when he was 10. Jack Black had a Bull Mastiff/Rottweiler mix named Chico. Chico died of parvovirus soon after Jack's parents divorced. Black moved to Culver City with his father and frequently visited his mother’s home until the end