I like Batman & Batman Returns, Batman Forever and Batman & Robin are terrible. I don't really have any urge to see Batman begins, although I have heard it is good. Those of you comparing Batman 1&2 to BB are being a little rash in my opinon.
Batman has gone through many changes since he was created. Batman 1&2 are a good balance of the two extremes of Batman, the dark side and the comic side. Batman Begins (so I have heard) focuses mainly on the dark side of Batman.
Just because the overall feel of the movies are different doesn't mean that one is good and one is bad. Batman 3 & 4 are bad movies, they were nothing more than eploitations of the Batman universe to make money. For the new movie I think it is unfair to compare and or pre-judge the actors in their rolls.