Cheers 45 on TV Guide's 100 Greatest Episodes of All-Time. In 2002, "Cheers" was ranked No. 18 on TV Guide's 50 Greatest TV Shows of All Time. In 2013, the Writers Guild of America ranked it as the eighth best written TV series and "TV Guide" ranked it #11 on their list of the 60 Greatest Shows of All Time. Before the "Cheers" pilot "Give Me a Ring Sometime" was completed and aired in 1982, the series originally consisted of four employees in the first script. Neither Norm Peterson nor Cliff Clavin, regular customers of Cheers, were featured; later revisions added
What Is... Cliff Clavin? What Is... Cliff Clavin? "What Is... Cliff Clavin?" is an eighth season episode of the American television series "Cheers". It was directed by Andy Ackerman rather than James Burrowswho directed 243 out of 273 episodes of the showand originally aired January 18, 1990 on NBC. In this episode, Cliff Clavin (John Ratzenberger) appears on the game show "Jeopardy!" and game show host Alex Trebek guest stars as himself. Cliff racks up an insurmountable lead during the game, only to lose it all in the final round. The episode received praise from critics for its concept and its guest star. Cliff