Cheers is a great case study for anyone looking to track the life of a good comedy series. At the end of season 3, it started to get a bit predictable, with Sam and Diane having most of each storyline, and once in a while, some good side jokes from the bar regulars. In retrospect, (read reruns), it seems the producers sensed this, and made changes to improve the show. They brought in additional characters (Frasier, Lillith, Eddie, Kelly, Robin, etc.), and they added some really funny recurring threads, (Gary\'s Olde Town Tavern, Carla\'s kids, Eddie\'s Ice Shows, etc.).
I am not privy to the behind-the-scenes politics, and I certainly don\'t know how much effort was placed on the revamping of this valuable and popular show, but remember it was MUST-SEE-TV, Thursday nights. This episode is one of the funniest episodes of all, and shows the writers at their best. The one-liners come fast and furious, and everyone in the bar (cast) has some good ones. Add Jennifer Tilly, who is one of the best and sexiest comedic actresses ever, and we have a classic episode. In fact, in my humble opinion, only Home Is The Sailor tops it. Everyone is having a good time laughing, and everyone is relevant to the storyline.