Magnotta was known in the film industry as a stunt coordinator for numerous features shot in New York during the 1970s and 1980s. In addition to handling the stunts on "Taxi Driver," Magnotta lent his expertise to films like Brian De Palma's "Dressed to Kill," Francis Ford Coppola's "The Cotton Club," Ron Howard's "Splash" and Russel Mulcahy's "Highlander," among many other titles. Magnotta's final screen credit was as coordinator and stunt performer in the 1988 film "The In Crowd."