One would have been the perfect Batman for all time if they hadn't cheesed out the Joker so much, the dark elements were there, the batmobile and suit were perfect. Just the Joker ended up being kind of campy at times :S if hollywood could take the best out of the first Keaton one and infuse Joker from the Heath Ledger one we would have a perfect batman.
I agree though it started going downhill after even the first one, there was some eclectic/eccentric elements in the second one as well, it was a telltale sign that things were going to more screwed up when Schumacher decided to derail the franchise.