Lot's of nice commercial applications in the future when we all use video phones or expect live video support on the web.
As far as using it for movies...I think sometimes people have fantasies of making movies all alone without any other people involved. My guess is that if you could do it then most movies would be kind of sterile (more than they are now).
In the end, big productions might find that live actors are cheaper and better, and the film making process much more fun when many people are involved.