Late Show with David Letterman S09 E137 Tiffani Thiessen, Bill Walton, Bonnie Raitt

Dave mentions Paul's appearance on tonight's episode of Ed, and shortly afterwards Paul wears the fake mustache he had to wear for the role; Alan and the Barbara Stanwyck look-alike perform another scene from Double Indemnity; Bonnie Raitt sings "I Can't Help You Now."