11. Matthew Labyorteaux
The American actor, best known for his role as Albert in Little House on the Prairie, was diagnosed with autism as a young child. He did not start walking until the age of 3, he did not start talking until the age of 5, and he would not allow his adoptive parents to hold him for a period of time. Today, Labyorteaux works with charitable organizations that aim to help troubled young individuals.