James Byron Dean (February 8, 1931 – September 30, 1955) was an American film actor.Dean's status as a cultural icon is best embodied in the title of his most celebrated film, Rebel Without a Cause, in which he starred as troubled stereotypical high school rebel Jim Stark. The other two roles that defined his star power were as the awkward loner Cal Trask in East of Eden, and as the surly farmer Jett Rink in Giant. His enduring fame and popularity rests on only three films, his entire starring output. His death at a young age helped guarantee a legendary status.In 1999, the American Film Institute ranked Dean the number 18th male movie star on their AFI's 100 Years…100 Stars list. He was the first actor to receive a posthumous Academy Award nomination for Best Actor and remains the only person to have two posthumous acting nominations (although other people had more than one posthumous nomination in other Oscar categories).