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Loose Cannons is a 1990 American action comedy film written by Richard Matheson, Richard Christian Matheson and Bob Clark, who also directed the film. The film stars Gene Hackman as hard-nosed cop Mac Stern who is teamed up with Ellis Fielding, a detective with multiple personality disorder, played by Dan Aykroyd, to uncover a long-lost Nazi sex tape, featuring Adolf Hitler, which would jeopardize the political future of the West German chancellor-elect Kurt Von Metz. The theme song "Loose Cannons" features vocals by Katey Sagal and Aykroyd.