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Cliff and Clair (Bill Cosby and Phylicia Rashad) , The Cosby Show
At first glance, Cliff and Clair may seem so boring in a TV world populated by will-they-or-wont they couples and on-again-off-again relationships. But that's precisely what makes them so great. Their union was never idealized, a la the Cleavers, but you know they were madly in love with each other and always made time for one another all the while juggling their busy careers and five kids.