I think VR movies are a still a bit off, though I could be totally wrong. The reason I say that is because some of the fundamental theories used in making a movie are different in VR. Namely, you can't be certain you know where the "camera" is. :) Also, VR movies require a lot of new and developing camera hardware and editing software to come along. There are some cool things out now but my understanding is it is all very new and developing. Ultimately, I still buy in on VR movies, though. I am a believer in VR movies mainly because of my own experience watching short films in VR was super cool but also from watching videos of people curled up in the fetal position as they were being shown some scary movie in VR. It's visceral in a way that has not been achievable up until now.
I also think AR well be a widely adopted medium and there might become a pretty gray distinction after a while. I could imagine headsets or glasses that you can increase or decrease how much external light comes through. I can see doing things like checking email, facebook, etc. being done in AR but still allowing you to go about your normal routine like making coffee and breakfast or walking the dog. Seems far more compelling than looking at notifications on my watch.
Eventually, I also suspect that we will be "mainlining" these experiences and not be wearing headsets at all. Implanting some device that directly stimulates the necessary parts of the brain (or other parts of the body needed).