(Mary is introducing everyone to Johnny Carson in the blacked out apartment)
Mary: And this is Sue Ann Nivens.
Johnny Carson: Mary, do you have a dog?
Mary: No, I don't.
Johnny Carson: Then one of your guests just licked my face.
Johnny Carson (standing in Mary's pitch black dark apartment): Nice place ya got here.
This episode was filmed on January 28, 1977.
Rhoda (Valerie Harper) and Gordy (John Amos) appear in this episode in flashbacks, but are not credited.
This is the second of two appearances of Irene Tedrow as Congresswoman Geddes on the series, the first being another ill-fated party episode, the season 4 episode "The Dinner Party".