Burt Ward - who'd finalized a divorce with his first wife several weeks earlier - was absolutely smitten with Kathy Kersh ("Cornelia"), whom he met for the first time on the set. Within a month of this filming, Kathy became Burt's second wife.
Window cameo: Howard Duff as Sgt. Sam Stone from the television show The Felony Squad
Batman (Adam West) states that before becoming a criminal, The Joker (Cesar Romero) used to be a professional hypnotist.
Bruce and Dick attempt to watch The Green Hornet television show, which was produced by the same people who did the Batman show.
Howard Duff's character "Sam Stone" is a play on the character he played on the radio, Sam Spade, Detective.