Larry Martin Hagman (September 21, 1931 – November 23, 2012) was an American film and television actor, director, and producer. He was best known for playing ruthless oil baron J. R. Ewing in the 1978–1991 primetime television soap opera Dallas, and the befuddled astronaut Major Anthony Nelson in the 1965–1970 sitcom I Dream of Jeannie.