Treat Williams

Richard Treat Williams is a Screen Actors Guild Award–nominated American actor and children's book author who has appeared on film, stage and television. He first became well-known for his starring role in the 1979 film Hair. From 2002 to 2006, he was the star of the television series Everwood. He is also known for starring in "The Substitute" franchise, beginning with the 2nd movie of the series The Substitute 2.