Allen Kelsey Grammer (born February 21, 1955), best known as Kelsey Grammer, is an American actor best known for his two-decade portrayal of psychiatrist (Psychiatry) Dr. Frasier Crane (Frasier Crane) in the NBC situation comedies Cheers (nine years) and Frasier (eleven years), and providing the voice of Sideshow Bob on the Fox (Fox Broadcasting Company) animated series The Simpsons. He was nominated for numerous Emmys, including one for playing Frasier Crane on three different sitcoms (the third being a guest appearance on Wings (Wings (TV series))). He has also worked as a television producer, director (Television director), writer, and a voice artist (voice acting).