Frasier and Diane have decided to live together, but Diane discovers, much to Sam's amusement, that she is allergic to something in Frasier's apartment. Meanwhile, Carla is the recipient of several gag gifts for her birthday, and gets cross with the gang.
- Shelley Long as Diane Chambers
- Ted Danson as Sam Malone
- Nicholas Colasanto as "Coach" Ernie Pantusso
- Rhea Perlman as Carla Tortelli
- John Ratzenberger as Cliff Clavin
- George Wendt as Norm Peterson
Recurring / Guest stars: