Tim Cunningham

Sam's brother forces Diane to chose between him and Sam.

Ernie "Coach" Pantusso discourages his likable daughter, Lisa, from marrying her pompous and rude fiancé.

Sam and Diane are plagued with doubts about getting back together.

Sam is used as the subject of Diane's research paper.

Carla is forced to clean up her act and behave nicely when she had to find another job while Cheers is being rebuilt. Woody's faith in Kelly is shaken when she learns they have religious differences.

Frasier's younger secretary goes on a date with him to get revenge on her parents.