Flubber is a 1998 film produced by Disney starring Robin Williams and Marcia Gay Harden. It is a remake of the 1963 Disney film, Son of Flubber.
Robin Williams plays an absent-minded professor named Philip Brainard who develops a green rubber-like substance as a new form of energy which he calls Flubber. It is highly unstable in bright light, but under all conditions is ductile, elastic, anthropomorphic, intelligent, impressionable, nearly indestructible, and capable of retaining kinetic energy indefinitely, so that if given the impetus it will rebound repeatedly, increasing the velocity and force with each collision. It is eventually used to help the University basketball team win. The film is rated G for slapstick action and mild language.