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Series costar Cindy Williams plays a dual role in this episode. Meeting a handsome doctor named Paul McKenzie (Paul Tully), Shirley (Cindy Williams) agrees to go on a date with him, while Lenny (Michael McKean) and Squiggy (David L. Lander) act as babysitters for McKenzie's son Keith (Keith Mitchell). As the evening progresses, it becomes painfully clear to Shirley that Paul wanted to go out with her only because she resembles his ex-wife Diane--a point driven home when Diane herself (also Cindy Williams, albeit in a blonde wig) unexpectedly shows up.