'Harvey' is a 1950 comedy-drama film based on Mary Chase's play of the same name, directed by Henry Koster, and starring James Stewart and Josephine Hull. The story is about a man whose best friend is a pooka named Harvey.

Elwood P. Dowd (Stewart) is a middle-aged, amiable though somewhat eccentric man whose best friend is an invisible 6' 3½" tall rabbit named Harvey. As described by Dowd, Harvey is a pooka, a benign but mischievous creature from Celtic mythology who is especially fond of social outcasts (like Elwood). Elwood has driven his sister and niece (who live with him and crave normality and a place in society) to distraction by introducing everyone he meets to his friend, Harvey. His family seems to be unsure whether Dowd's obsession with Harvey is a product of his (admitted) propensity to drink or perhaps mental illness.

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