farinoco, go play the batman demo yourself, you can dl it from the nvidia server at high speed.
the physics effects in it are NOT great at all... not at all...
there are 1-2 dozen newspapers flying off the ground if you fight in some scenes, and its not realistic at all...
there is volumetric fog, woooooa, havent seen that before :P
and then there are some other effects that you really dont even notice if you dont play the same level several times with physix on and off...

mirrors edge was still the best physix implementation so far, and even there it didnt really matter or change the gameplay...
i wish theyd focus more on getting physics done right instead of fighting over WHAT processor to process it on