Notes 1987 Amerika Jacqueline 'Jessie' Bradford - 1990-1991 Twin Peaks Donna Hayward 1-2 1997-2003 The Practice Helen Gamble 2-7 2004-2005 Huff Melody Coatar 1 2005-2006 Las Vegas Monica Mancuso 3 [ edit ] TV appearances Year Title Season Role Episode Notes 1987 Sable 1 Melanie Waterston "Toy Gun" Episode 1 1991 The