As postman Cliff Claven, John Ratzenberger was the king of useless trivia in Cheers. But, in 1980, on the Rebel Base on the ice planet Hoth, Ratzenberger is the one who delivers the bad news to ...
Cheers wouldn’t have been the same without Cliff Clavin — and the beloved character wouldn't exist without John Ratzenberger's quick thinking, according to the actor. “So I was walking out ...