has called Sam's women in alphabetical order, and that Rebecca Howe (Kirstie Alley) is the next recipient on the list. Carla uses her bluff to blackmail the reluctant Rebecca into helping Sam capture the thief. The thief calls Rebecca, who asks him to meet her at the bar instead of the roller rink. Then the thief enters, turning out to be a teenage boy named Timmy (Greg E. Davis), who wants to become a "babe hound" like Sam. After getting his little black book back, Sam lets Timmy go, advising him to start as a "babe pup" and to call girls around his age, and gives him $25 for a haircut and a tip for a shampoo girl. Production Dan O'Shannon and Tom Anderson co-wrote "What Is... Cliff Clavin?", and Andy Ackerman directed the episode. Bernard Kuby portrays Earl, a bar patron in the cold opening returning to Cheers for the first time since he moved to Alaska in the 1960s and explaining the bar's interior differences between 1960s and 1980s, with only Norm remaining unchanged. Jeopardy! announcer Johnny Gilbert also made a guest appearance as himself announcing the game show. William A. Porter portrays one of Jeopardy! contestants, Milford Reynolds, a doctor of neurosurgery. Audrey Lowell portrays another contestant, Agnes Borsic, a lawyer who eventually becomes the top winner after Cliff wagered and then lost all of his winnings. Peter Schreiner and Steven Rotblatt are credited for their background appearances. Reception General Norman Schwarzkopf said this was the funniest episode of Cheers. Don Leighton from Superior Telegram called this episode the greatest and said the Final Jeopardy! moment was hilarious. Jeffrey Robinson from DVD Talk said the concept of the episode was a riot. Hot Springs Village Voice called Cliff's Final Jeopardy! moment a classic example of his mishaps caused by his own "know-it-all nature". Andrew Razeghi, in his book Hope, called this episode "one of the most memorable episodes" of Cheers, found Cliff's response to the Final Jeopardy! clue neither right nor wrong and an example of divergent thinking, and called Cliff a poster child of Joy Paul Guilford. Former Jeopardy! contestant Ken Jennings, in his book Brainiac, noted that Jeopardy!-related sitcom episodes had become common at the time. In popular culture On the first episode of Jeopardy! season 31, which aired on September 15, 2014, Jeopardy! champion Elizabeth Williams echoed Cliff Clavin's answer in her response to