Lily starts wearing her large bat necklace in the latter half of this episode.
On of the last scenes shot in this episode uses a "lost in space" scenery set
When police chief Harris puts on the blonde wig, the music from Stephen Foster's "I Dream of Jeanie with the Light Brown Hair" is heard on the soundtrack.
Herman states that the electric bill for Grampa's experiments is $103.00. As of December 2023, accounting for 59 years of inflation, that would be equal to: $1020.20.