Ha! I watched Touki Bouki, one of my favorite films right before my interview (it was over Skype) and it was a beautiful experience. I think the nervousness heightened my senses and made me really take it all in. It was great motivation.
Anyway as
@Heisenberg91 said, it really is just a relaxed conversation. They asked me to say something about myself, then what I felt I could have done differently in my portfolio submissions, who my favorite directors were, films I've watched and books I've read recently. They did also ask how I plan to my fund my degree- I guess it's important since it seems to run across the answers I've seen. They also asked if I had any questions (I always ask 2 or 3) and then that was it.
The interviewers were very friendly and patient, unlike my other interview where they literally told me they were in a hurry. As cliche as it sounds I'd say just relax and be yourself.
All the best!