Leonardo said:

I think they used a dancer for some of the scenes when he's in the suit, Keaton didn't wear it for the whole movie. Also, the neck was made of stiff rubber, so he couldn't turn his head.

Yeah and the suit weighed in a whopping 85 pounds when all the gear was on it, you try moving normally with 85 pounds of rubber on top of you.

I have to say I love the Burton movies because they just have a look and feel to them that no other film has and Keaton is my second favorite Batman after Kevin Conroy on BTAS. Oh and I really like Elfman's music too.