Re: am I the only one who DIDN'T think Nicholson nailed joker??
Heath's Joker had his moments. "Very poor choice of words" "Does Harvey know about you and his little bunny?" What I didn't like was his attempt to prove a point with his 'social experiment' (I also think those scenes were badly acted and executed poorly, on the part of the people on the boat). It's like Nolan is trying to be clever by referencing current events, setting up Joker as this anarchist/terrorist in the vein of 9/11. I thought it was very anti-climactic, also.
Why not have Joker cause chaos for no reason like Jack Nicholson's did? (ok, he was trying to out-show Batman, but that's about all there was to it). I know he did something similar in The Killing Joke, but that was more about trying to drive Commissioner Gordon mad, not forcing a large group of people to commit mass murder to save their own skins.
A couple of other little nitpicks, but overall I enjoyed Heath Ledger's performance. That and Tom Hardy's Bane are the best things about Nolan's Batman trilogy.
I still prefer Nicholson as the Joker, though.