What Is... Cliff Clavin? show's host, Alex Trebek, later arrives at Cheers, tells Cliff that his response should have been accepted earlier, and announces his resignation as the host of "Jeopardy!". However, Cliff convinces Trebek to remain as host by telling him how much the show and Trebek mean to him. After Cliff shares the news with others, Norm Peterson (George Wendt) praises Trebek for doing this just to make Cliff feel better. However, Trebek says that he did not realize that Cliff was at the bar and that meeting him had been a coincidence. Trebek says that Cliff scares him and that the
Norm Peterson beer taster, capable of spotting a bad vat in a factory by drinking a single bottle. Even when unemployed, Norm is the bar's best customer. A running gag throughout the series are the numerous jokes made about the enormous size of Norm's tab at "Cheers" (e.g., several large binders are shown as being just a portion of it – in the episode "Home Malone" (season 9, episode 25), when Woody's rich, naïve girlfriend Kelly waitresses at Cheers to gain "real-life experience," Norm convinces her that the tab is a record of the beers for which he has already paid, and