Son of Flubber is the 1963 sequel to the Walt Disney children's movie comedy The Absent Minded Professor (1961), also starring Fred MacMurray as a scientist who has perfected a high-bouncing substance that can levitate an automobile and cause athletes to bounce into the sky. The film co-stars Nancy Olson and Keenan Wynn, and was directed by Robert Stevenson. Much of the cast of The Absent Minded Professor also appears in this film, including Elliott Reid and Tommy Kirk.