Cosby played a doctor and dad in this all-time classic, which was TV's biggest hit in the 1980s and almost single-handedly revived the sitcom genre and NBC's ratings fortunes after ABC passed on the series. Mostly set in a Brooklyn brownstone, the series focused on obstetrician Cliff Huxtable and his wife, Claire, a lawyer, as they raised their kids with loving firmness. The series debuted in September 1984, ran for eight seasons and produced one spin-off, `A Different World.'

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