Christopher Lloyd is an American actor with a relatively long career. His better known roles include drug-using taxicab driver Jim Ignatowski in the sitcom "Taxi" (1978-1983), Klingon officer Commander Kruge in the film "Star Trek III: The Search for Spock" (1984), inventor Dr. Emmett "Doc" Brown in the 'Back to the Future" film trilogy (1985-1990...