"A Little Peace and Quiet" has no closing narration.
The song that Penny (Melinda Dillon) plays on the radio while cooking breakfast is a knock-off of "Material Girl" by Madonna.
Among the boxes of cereal on the shelves when Melinda Dillon is shopping are boxes of C3PO cereal, which were a tie-in to Star Wars and in production only from 1984-1986. They are visible about the time the woman is heard asking for a price check over the intercom.
When the preppy man is told to "shut up", he was mid-sentence, but when he's told to "start talking", he is starting a new sentence.
Joshua Harris (Russ, Jr.) appeared in two episodes of different series which aired consecutively on CBS on September 27, 1985. The other was the Dallas (1978) episode The Family Ewing (1985) in which he made his first appearance as Christopher Ewing, a role which he would play until the series' penultimate episode The Decline and Fall of the Ewing Empire (1991). The two series were both part of CBS' Friday night schedule during the 1985-1986 season with The Twilight Zone (1985) airing at 8 o'clock and Dallas (1978) airing at 9 o'clock.