Jack Black is an American comedian, actor and musician. He makes up one half of the comedy and satirical rock duo Tenacious D. The group has two albums as well as a television series and a film. His acting career is extensive, starring primarily as bumbling, cocky, but internally self-conscious outsiders in comedy films. He was 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. He also hosted the 2011 Kids Choice Awards.

Black was born Thomas Jacob Black in Santa Monica, California, the son of two satellite engineers, Judith (née Cohen), who worked on the Hubble Space Telescope, and Thomas William Black.

Jack Black was born in California, and attended the University of California at Los Angeles. While at UCLA, he was a member of Tim Robbins's acting troupe and it was through this collaboration that led to his 1992 film debut in Bob Roberts (1992). Although he was just a background voice in his first film, Jack's appearances in such television shows as "The X-Files" (1993), his breakthrough performance in High Fidelity (2000), and his rock-comedy band, Tenacious D, have created an ever-growing cult following.

As a child, Black appeared in a commercial for the Activision game Pitfall! in 1982, which was later shown during an appearance on Jimmy Kimmel Live and again on The Tonight Show with Conan O' Brien. When Black entered high school, his parents enrolled him at the Poseidon School, a private secondary school engineered specifically for students struggling in the traditional school system. Black also attended the Crossroads School, where he excelled in drama. He later attended UCLA but dropped out during his sophomore year to pursue a career in entertainment, at which point his father discontinued his financial support