It did an excellent job of walking the line, I thought.

Also anachronisms which transcended the lifespan(s) of any character on the show were a nice touch

I would bet Mary Dahl's sweet and innocent demeanor is intended to be a jarring contrast against her bitter and homicidal ways, as opposed to 60s camp. This strategy works a lot better with the Joker.

It's hardly Shakespeare, but then again, if Hamlet's dad had the Batmobile he never would have died of ear poison. (Batman keeps anti-toxin in the visor.)

"Looky what I found..."