A Farm for the Future is a good introduction to some of the ramifications of peak oil and some of the potential of permaculture to meet these problems. This is a good introduction only - it barely scratches the surface of the problems and the solutions, but you can find a lot worse stuff on television to waste valuable time and resources on.
I'd love to talk about this film in our coming class. We may also see another film in class that is more in depth on permaculture. Permaculture is one of several strategies to consider for a more sustainable future.
Look for more posts in the coming two days.