Son of Flubber is a 1963 Disney movie directed by Robert Stevenson. It stars Fred MacMurray, Nancy Olsen, Keenan Wynn, and Tommy Kirk. It is a science fiction, family-oriented comedy, and a sequel to Disney's 1961 comedy, "The Absent-Minded Professor". "Flubber" tells of the Professor's further experiments with his anti-gravity substance called "Flubber".