Oh, and concerning the frame rates I can't agree with Mr. Cameron. It is only in 3D where the frame rate is important, because of the motion blur which the human brain perceives as natural in 2D and when you increase the frame rate in 2D it looks more fluent but less film-like, now in 3D, which tries to look less like film and more like reality and that is how it is perceived by the brain, the motion blur is felt as a disruption and so they need to make the frame rate higher in order to minimize the motion blur while retaining the illusion of fluent movement.

I have a TV with the 100Hz function, which basically means, that the TV shows 100fps even when you watch a 25fps or 30fps video and makes up the missing frames more or less successfully, which results in a more smooth, fluent movement. But when this function is used on a movie, it immediately ceases to look like film and starts to look like a soap opera, so to me the current frame rate is a part of the magic of film and I'd hate to see that change.