Ruth C. Sullivan family member with developmental disabilities. She retired from the Autism Services Center on November 1, 2007 at the age of 83. Sullivan assisted in the production of the 1988 movie "Rain Man" by serving as a consultant on autistic behavior, and Dustin Hoffman worked with Sullivan and her son Joseph, who has autism, when practicing for his role. Hoffman thanked her and Joseph in his Oscar speech. Sullivan has the last credit in the movie, and the extended DVD version features an interview with Joe. (Joe Sullivan was not the only inspiration for Hoffman's role; the role was originally written
Dustin Hoffman and my brother, a high-school varsity football player, was Biff." Author Marie Brenner notes that Hoffman "has been obsessed with the play" throughout his career: "For years he has wanted to be Willy Loman; when he discovered that Arthur Miller was his neighbor in Connecticut, they began to talk about it in earnest." For Hoffman, the story also left a deep emotional impact from the time he first read it: Hoffman rehearsed for three weeks with the play's original star, Lee J. Cobb, and remembers seeing his stage performance: "I'll never forget that period in my life. It was so