The longtime companion of late filmmaker James Bridges, Larson co-produced such Bridges films as The Paper Chase (1973), Urban Cowboy (1980, with John Travolta) and Bright Lights, Big City (1988). He also worked on Sept. 30, 1955 (1977), Continental Divide (1981, with John Belushi), Mike's Murder (1984) and Perfect (1985, again with Travolta).
With the exception of Smallville Jack has appeared in every live action version of the Superboy/Superman story since the end of his 1950's seriesThe Adventures of Superman. He has also contributed commentaries and featurette appearances for several Superman DVD releases.
Jack Larson (speaking about George Reeves, who was contracted to direct and star in a seventh season of 26 episodes of The Adventures of Superman at the time of his death): I know George was depressed. I know life was a mess for him. I don't think the 26 episodes meant a lot to him. It meant a lot to me - I needed the money.