At the end of the episode, everyone is saying goodnight to each other. Jack says "Goodnight, Johnboy," referring to the familiar closing to each episode of "The Waltons". John Ritter played Rev. Matthew Fordwick on the Waltons from 1973-1976 This Three's Company episode aired just days after John Boy's last episode aired before leaving The Walton's series.
In this episode Mrs. Roper learns that Jack is actually straight after Janet tells her and Mr. Roper in the pilot episode that he was gay, in order to move in with two girls. Mrs. Roper helps Jack and the girls keep it secret from her husband.
This is the first mention and appearance of the Regal Beagle, the English pub and tavern that would become the gang's regular hangout throughout the series.
Only appearance of Priscilla Morrill as Mrs. Snow, Chrissy's mother.