Patty Duke is an actress who became famous as a child. Patty Duke has appeared on Broadway, on television, and in the movies. As a child, Patty Duke appeared in both the Broadway version and movie version of Helen Keller's autobiography, The Miracle Worker. In fact, Patty Duke is the youngest actor to have their name appear above the name of the play on the marquee. Patty Duke was also the youngest actor to win an Oscar for her performance in The Miracle Worker movie. After this success, Patty Duke went on to portray identical cousins in the television show The Patty Duke Show. Later, Patty Duke appeared in multiple movies, mostly made for television movies, as well as several other plays and several short lived television series.