The Federation science outpost attacked by the Gatherers just prior to the episode used a large scenic background painting originally from Forbidden Planet (1956). The painting is a planetscape seen through the window of the station.
This episode marks the reported meeting of Marina Sirtis (Counselor Deanna Troi) and her future husband Michael Lamper. He is not included in the credits as he was only an extra.
This was the last episode that aired in the 1980s in the US.