Okay, so maybe, the latest incarnations of the Dark Knight have sort of watered down the impact of the Caped Crusader's modern film debut.
And maybe, Jack Nicholson, for the role of the Joker was a little too old, not to mention, not in the kind of shape that one would expect for a Clown-Prince of Crime.
But for me, personally, this isn't so much about the acting (which I admit, despite the fun he has with it, Jack does tend to opt for a bit of an over-the-top performance, even for the Joker....) but more for the weight that his presence brings to the flick. In the same manner of Marlon Brando's participation in Superman's 1st big budget blockbuster, Nicholson also brings a certain class & credibility to a movie based off of a what the "cool kids" of the general public tend to look at as "just a silly comicbook".
Besides, Tim Burton's adaptation of the Batman still was the first serious effort outside of the comicbook to try & depict ol' Bat's as the true Dark Knight of justice that we nerds who read his comics always knew he was.
8/10