 Steven Spielberg (qv) was displeased to learn that Universal used  footage from his movie Duel (1971/I) (TV) (qv) in the episode  "Never Give A Trucker An Even Break". Unable to sue on the matter  (due to the studios ownership of both the film and Hulk series), he  insisted that all his future contracts list a clause designed to  protect his movies from being used as stock footage.