12. Tim Allen
Best known for his role as Santa Claus and as the voice of Buzz Lightyear in Toy Story, Tim Allen had a rough start in his 20s. In 1978, when he was in his mid 20s, Allen was arrested for possession of over 650 grams of cocaine. To avoid a life imprisonment charge, Allen gave the names of other dealers and only received a sentence of three to seven years.
He only ended up spending two years behind bars, though. After prison, Allen began working at an advertising agency and moonlighted at The Comedy Castle during the evenings. After being discovered by Disney and offered some roles, he turned them all down and fought to have his own routine, which soon turned into Home Improvement. Home Improvement launched Allen’s career.