File transfer?
The better question might be how does one intend to most easily stream video from a remote source.
Even at the maximum 64GB the iPad obviously will not be holding many of your movies. It is somewhat odd that on its site Apple promotes the viewing of video from iTunes as one of its key features, yet makes no mention of how this might actually work in practice. The implication is one can buy and view anything they like, which is true until storage capacity is very shortly reached.
So what exactly does one do?
Perhaps download the file to an external hard drive via another computer or the iPad? And just how seamlessly? Presumably one will wish to use their iPad for this, will need to do it with something, and just how easily? Not just a question of movies either, as with all the many apps, books, etc. available and promoted space limitations will be realized quickly.
How far has Apple or anyone else thought this through?