William King Baggot was an American actor, film director and screenwriter. He was an internationally famous movie star of the silent film era. The first individually publicized leading man in America, Baggot was referred to as "King of the Movies," "The Most Photographed Man in the World" and "The Man Whose Face Is As Familiar As The Man In The Moon."

A movie star is an actor who is famous for their starring, or leading, roles in movies. The term is used for performers who are marketable stars as they become popular household names and whose names are used to promote movies, for example in trailers and posters. The most prominent movie stars are known in the industry as bankable stars.