Another great movie I've seen is Beers Wars. This documentary film is all about small craft beer breweries and how mass marketed beer corporations (Budweiser, Coors, Miller) will do anything to stay on top of the market.
Movie trailer: http://www.youtube.com/watch?v=uY-Bg5Odi0M
Movie trailer: http://www.youtube.com/watch?v=uY-Bg5Odi0M