Shallow Hal and School of Rock in the early 2000s. More recently, he starred in The House with a Clock in Its Walls the Jumanji franchise.
He also voiced the lead panda in the Kung Fu Panda animated films. The 52-year-old American also has a star on the Hollywood Walk of Fame and he is the lead vocalist of Grammy Award-winning comedy rock band Tenacious D.
Outside of acting, he has spoken about his personal relationships and childhood. As a young teenager, at just 14, Jack struggled with cocaine addiction.
He told Parade magazine about the ordeal. He said: "I remember just lots of turmoil from that time period. I spilled my guts, telling him [his therapist] I felt guilty about stealing from my mom to get money for cocaine.
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