This episode marks the 2nd appearance of the bat-parachute pick-up van.
Terry Moore portrayed The Jokers side squeeze Venus. Shocking Blue where inspired by this character to write their #1 hit Venus (1969)
Marks the first episode where two big named super villains team up. The Joker and Penguin. Previous to this, Catwoman had teamed up with The Sandman, however Sandman is not considered one of the "Big 4" super villains of the series.
Artists whose albums appear on the record shop wall include Dean Martin, Mitch Miller, and Andre Kostelanetz.