Cheers: "What is... Cliff Clavin?" The Academy of Television Arts & Sciences Foundation Presents 02:26 Tabs Who talked about this show Andy AckermanView Interview Andy Ackerman on working with Alex Trebek for the Jeopardy! episode of Cheers, "What is... Cliff Clavin?" 00:52 Andy Ackerman on working with Alex Trebek for the Jeopardy! episode of Cheers, "What is... Cliff Clavin?" 00:52
