Ropers' credits: Mrs. Roper wanting to get frisky.
Theory of Relatives: Chrissy's father, Reverend Luther Snow, is introduced. This would be his first appearance, and he would actually appear in episodes after this, one of the few relatives of the trio to appear more than once.
Why does Reverend Snow think Eleanor lives in the apartment still? In Episode 2: And Mother Makes Four, Chrissy's mother visits and meets Jack. You would think she would immediately report to her husband that Eleanor left and that Jack was the new roommate.