There are a number of celebrity callers in this episode. Stanley Tucci is Morrie, a man whose wife suspects him of cheating on her, to the point where he's locked himself in his bathroom to make the call. Penny Marshall, Celeste, calls. She is Morrie's wife who picks up the phone, sure he's on the phone with his mistress. Estelle Parsons then calls. She is Celeste's mother who picks up the phone telling them they're all on the radio. Finally, Hilary Duff calls in and she is Morrie & Celeste's daughter. She announces she's running away from home after the rest of her family have carried their latest argument onto the air.
Estelle Parsons plays the role of Celeste's (another caller) mother in this episode, who calls in to Frasier's radio show. In episode 11.17 Coots and Ladders (2004) she appeared in the role of Opal.
The sub-plot about Daphne abusing Niles in her sleep was previously used in the "Mad About You" episode "Nat & Arley" (1999).