Batman: "The Entrancing Dr. Cassandra": This is a weird one. A couple of middle-aged alchemists who talk like beatniks? Invisibility that "isn't really" invisibility but might as well be? Flattening the Terrific Trio? And it teases a team-up of all the arch-villains and then just gives us a bunch of non-speaking photo doubles, and the big fight is invisible/in the dark. Which is mildly amusing, but still frustrating. It just didn't really work.
The show really was taking a more fanciful tack toward the end. I wonder, if there'd been a fourth season, would we have seen more of the fantasy and sci-fi elements of the Silver Age comics? A time machine? Batman turned into Bat-Mummy or Bat-Baby or Bat-Ape? Billy Barty as Bat-Mite?
I think this is the first time we get "Special Guest Villainess" and "Extra Special Guest Villain," rather than the other way around. Nice having the female character in the lead (something we also saw in the Catwoman-Joker team-up), but the characters just didn't work that well. Ida Lupino was fairly good given the limits of her material, but Howard Duff's Cabala was just annoying. Enough with the "Doccy-Baby" all the time!
Cute meta reference with Gordon saying "A Batfight rarely takes more than 40 seconds." Batman's line about Robin undergoing "the first oncoming thrust of manhood" while Batgirl was sitting on his lap was pretty brazen innuendo -- although it would've been a bit less disturbing if they hadn't just roofied Batgirl.
Seriously, why was Batgirl so content with the idea of being kept in the dark about the Duo's secrets? Surely they'd make a more effective team if they all knew each other's identities. That's bugged me pretty much my whole life. I never got why they didn't team up fully. (In the '77 Filmation animated series that brought back West and Ward and was kind of a pseudo-sequel to this, Batman and Robin did know Batgirl's true identity, though it was ambiguous whether the reverse was true.)
I don't think I'm gonna watch Hulk tonight. Maybe I'll watch it on Netflix later and chime in.