The Wiest Oscar Winner is DIANNE Wiest, an American actress who won two Academy Awards for Best Supporting Actress for her roles in the films 'Hannah and Her Sisters' (1986) and 'Bullets Over Broadway' (1994). She has also been nominated for three other Academy Awards and has won two Emmy Awards. Wiest has appeared in numerous films and television shows throughout her career, including 'Edward Scissorhands, ' 'Parenthood, ' and 'Law & Order.'