McKay: Yeah, reminds me of an old Batman episode, actually. Catwoman used a drug to put a spell on Batman, making him fall in love with her. Ended up doing all sorts of evil things for her. Kind of a turn-on, actually. Julie Newmar in a cat outfit...
Sheppard: Eartha Kitt was Catwoman.
McKay: Not 'til Season three.
The evil scheme McKay refers to that Catwoman used was seen in the episodes "That Darn Catwoman (1)" and "Scat, Darn Catwoman (2)." She uses the drug Cataphrenic to first subvert Robin and then Batman under her hypnotic spell.