On the dvd in the bonus material section, go to more. Then go to rules and clues.Then when they finally get to the anniversary part, they said if you look closely, the chair doesn't move. Then you can also see that the tablecloth moves from Bruce's knee. BIG MISTAKE!
Well yeah, it's a bonus feature. They are not going to go nuts trying to make it perfect as well. One would think that they would concentrate on the actual movie itself. Perhaps that's why it got cut, and ended in the "Bonus" section of the DVD.
he also moved the chair in the hospital. but i think that the tablecloth isn't that big of a deal because if that really happened someone might have thought it was just wind moving it or a breeze from somewhere.