From Wikipedia, the free encyclopedia. Leslie William Nielsen, OC (11 February 1926 – 28 November 2010) was a Canadian and naturalized American actor and comedian. Nielsen appeared in over one hundred films and 1,500 television programs over the span of his career, portraying over 220 characters. Born in Regina, Saskatchewan, Nielsen enlisted in the Royal Canadian Air Force and worked as a disc jockey before receiving a scholarship to Neighborhood Playhouse. Making his television debut in 1948, he quickly expanded to over 50 television appearances two years later. Nielsen made his film debut in 1956, and began collecting roles in dramas, westerns, and romance films. Nielsens performances in the films Forbidden Planet (1956) and The Poseidon Adventure (1972) received positive reviews as a serious actor, though he is primarily known for his comedic roles. Although Nielsens acting career crossed a variety of genres in both television and films, his deadpan delivery in Airplane! (1980) marked a turning point in his career, one that would make him, in the words of film critic Roger Ebert, the Olivier of spoofs. Nielsen enjoyed further success with The Naked Gun film series (1988 – 1994), based on a short-lived television series Police Squad! in which he starred earlier. His portrayal of serious characters seemingly oblivious to (and complicit in) their absurd surroundings gave him a reputation as a comedian.