A case of mistaken identity leads to Frasier dating Kenny's wife (Illeana Douglas); an eating binge discomfits Daphne. Kenny: Tom McGowan. Daphne: Jane Leeves. Niles: David Hyde Pierce. Martin: John Mahoney. Janis: Julie Dretzin. Roz: Peri Gilpin. Frasier: Kelsey Grammer.