Ophelia's stroking Uncle Fester's face while saying "There's something about a sulfuric acid man!" is a nod to Aqua Velva aftershave ads of the day, saying, "There's something about an Aqua Velva man!"
The last show of the series.
About six weeks after the Addams Family series finale aired, Jackie Coogan also appeared in The Case of the Final Fade-Out (1966), which was the series finale of the original Perry Mason TV series.
The popular film series "A Christmas Story" would also make use of an artificial mannequin leg as a prop 17 years later in 1983.
Gomez and Morticia are playing floor hockey in the playroom.