Cliff Clavin
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Clifford C. Clavin Jr. is a fictional character on the American television show Cheers played by John Ratzenberger. A postal worker, he is the bar's resident know-it-all. Cliff was not originally scri
Ratzenberger at the 1992 Emmy Awards
Wings (1990 TV series)
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Wings is an American television sitcom that ran for eight seasons on NBC from April 19, 1990, to May 21, 1997, for a total of 172 episodes.
Cliff Clavin
…decided to add a know-it-all character and Ratzenberger helped flesh it out. The actor made guest appearances as Cliff on The Tortellis, St. Elsewhere, Wings, and Frasier…
Cast of Wings seasons 7–8 (l to r): Tony Shalhoub, Crystal Bernard, Timothy Daly, Steven Weber, Rebecca Schull, David Schramm, Amy Yasbeck