With Carla (Rhea Perlman) on maternity leave, Sam (Ted Danson) hires her sister Annette (also played by Rhea Perlman) as a temporary replacement. Outwardly shy and modest, Annette quickly proves that appearances are deceiving -- in fact, she's even hotter to trot than Carla, if such a thing is possible. But though practically everyone at Cheers sees right through Annette's innocent act, Cliff (John Ratzenberger) remains smitten by the "sweet kid." ~ Hal Erickson, Rovi