Hi, Mom! (1970) is a black comedy by Brian De Palma, and is one of Robert De Niro's first movies. De Niro reprises his role of Jon Rubin from Greetings. In this film, Rubin is a fledgling "adult filmmaker" who has an idea to post cameras at his window and video tape his neighbors, à la Hitchcock's Rear Window. De Niro's character, as well as the movie overall, may be seen as a kind of comic precursor to the later De Niro film, Taxi Driver.
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