Stockard Channing (born Susan Antonia Williams Stockard; February 13, 1944) is an American stage, film and television actress. She is known for playing Betty Rizzo in the film Grease (1978) and First Lady Abbey Bartlet on the NBC television series The West Wing (1999–2006). She is also known for originating the role of Ouisa Kittredge in the stage and film versions of Six Degrees of Separation, for which she was nominated for a Tony Award and the Academy Award for Best Actress.