For Joan Rivers: A Piece of Work they covered 14 months in the life of the 75-year-old comic, following Rivers to London, where she put on a play about her life that may or may not eventually make it to Broadway. (IndieWIRE interviews the two filmmakers in this in-depth pre-Sundance feature.) Submarine's Josh Braun is repping the film as it makes its Sundance world premiere: all rights are available.
Check out this exclusive clip. And Sundance's video interview.