Richard Kline guest stars on this episode. He previously worked with Susanne Somers on Three's Company
This is the 100th episode of the series.
In this episode Richard Kline and Suzanne Somers are reunited they previously starred in Threes Company together
Mister Chips is "reading" National Geographic, Vol. 181, No. 3 (March 1992). The issue, which features a photograph of a gorilla on the cover, concerned the relationship between humans and apes.