Look at this file:
It contains 2 videos: one filmed at 24 fps, and the other at 48 fps.
24 fps is the speed of cinema movies. 48 is future movies speed.
New movies filmed at 48 fps are The Hobbit, Prometheus, Daredevil, Fantastic Four, the Chronicle sequel, The Wolverine, the Rise of the Planet of the Apes sequel, and A Good Day to Die Hard (Die Hard 5).
Not all theaters are ready for playing movies at 48 fps, like not all can play 3D movies. I don't care much for 3D movies, (I feel that they need to fix a lot of errors like blurring and focus), but I ever dreamed of higher fps movies, because 24 fps movies look jerky to me. I thought that nobody cared, but it seems like they care, so it is happy news to me. The future is 48 fps (?why not 60 or 72?).