Ennyway, I say the 1966 Batman returned a few years back in the Batman: Brave & Bold cartoon. Here's my proof:
First off, the Bat-Mobile. If Batman was supposed to be such a dark loner, WHY would he drive around in a two-seater? That gave me the proof that Robin existed in this universe.
Second, the jailbreak. In an early episode, Green Arrow helped Batman stop a jailbreak at Gotham Prison. Among the attempted escapees were Shame, Egghead, King Tut, and Bookworm, all of whom only appeared on the TV show.
Third, the Joker. In the Joker two-parter, neither Batman nor Joker recognized the Red Hood. In the TV show, Joker was said to have been a stage hypnotist before turning to crime, with no mention of the Red Hood. Also, in the same two-parter, Joker was thinking about death-traps he'd put Batman in (the electric chairs, the giant clam, and one or two others), all of which were on the TV show.
I'd pointed this all out on another message board when someone was going crazy trying to figure out what continuity the B&B Batman fell under. I think Batman would be proud of my deductive talents, no?

