Directed by Gene Kelly, this all-star romp centers on faithful married man Paul Manning (Walter Matthau), who's tempted by his philandering friend Edward (Robert Morse) to cheat on his beautiful wife (Inger Stevens) -- even though he doesn't really want to. Adding to the comedy, an arsenal of celebrities appear in illustrative how-to vignettes, including Lucille Ball, Sid Caesar, Art Carney, Jayne Mansfield and Carl Reiner.