Why does Joker complain to Batman about dropping him in a vat of chemicals?
I never entirely understood why Joker would randomly say that during his final confrontation with Batman up in the cathedral. Up until that point, it was never alluded to that the former Jack Napier detested (outside of the inconvenience of having to put on flesh toned make-up from time to time) having permanent white, chalky skin and green hair and finger nails. He even tells Grissom he "Jack is dead!" and that he feels reborn and liberated.
I get that Tim Burton was trying to get across the message that Batman created the Joker and the Joker created Batman when he murdered is parents. But they could've done it in a less clunky and forced manner.