I have never seen the last two, well... the Gotham Joker hasn't really come into his own yet has he? Or did I miss some episodes?
For me it's Tim Burton's Batman every time. His Gotham is the best, the art-deco metropolis, the brooding villains and cartoon characters... Jack Nicholson falling into that acid, the way he still smiles when he's angry... I find Heath's version a weak copy , like it thought Nicholson was doing a cartoon and he tried ot make it real. I didn't think it worked at all. I tried watching it last night and just don't buy him as The Joker.
I'm also a big fan of the old series with Adam West, but I find Caeser less intimidating... but oddly more insane!
That's not fair to put jared Leto in this poll when Suicide Squad has not even come out yet.