Cheers, where everybody knows your name. Only 4 of the show's cast were a part of all 11 seasons, but the zany ensemble from all backgrounds were so easy to love that they really did just...fit. The final episode of Cheers was the second-most watched television series finale in history.
Fun Facts: The role of Cliff Claven was originally cast as a security guard, but changed at the last minute to be a postal worker. Emma Thompson guest-starred as Frasier's ex-wife.