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 Hoffman to change his attitude, from being a "desensitized advertising art director" into becoming a "responsive and concerned daddy" after his wife (Streep) walks out on him and their six-year-old son, Billy. Hoffman, during the making of the movie, was also going through his own divorce after a ten-year first marriage. Hoffman has said, "Giving myself permission not only to be present but to be a father was a kind of epiphany for me at that time, that I could get to through my work. . . . I got closer to being a father by playing a father. That's