Actress Patty Duke. At the time of her 1962 film "The Miracle Worker," Duke was the youngest actress to win an Oscar, for her role as Helen Keller. At 16, she was the youngest actress in television to have a prime-time series built around her. The success, however, masked personal misery which included depressions that led to suicide attempts and a string of failed marriages. Duke has written an autobiography titled Call Me Anna.