Caligula (Italian: Caligola) is a 1979 Italian-American erotic historical drama film focusing on the rise and fall of the Roman Emperor Caligula. It stars Malcolm McDowell, Teresa Ann Savoy, Helen Mirren, Peter O'Toole, John Steiner and John Gielgud. It is the only feature film produced by the men's magazine Penthouse. Producer Bob Guccione, the magazine's founder, intended to produce an explicit pornographic film with a feature film narrative and high production values. He also cast Penthouse Pets as extras in unsimulated sex scenes filmed during post-production by himself and Giancarlo Lui.
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