OK, this is probably a silly question but not having bought a movie through iTunes before I just want to make sure. Are the movies they sell universal throughout their platforms? What I mean is, when you play a DVD it does not care what size screen you are viewing it on. Are these movies the same way and can I view them on both my Touch and iPad without any re-formatting? As I said, this is probably a silly question and the answer the obvious YES but I just want to be sure before buying anything.