Several episodes of the early 90s Discovery Channel behind-the-scenes series Movie Magic have been posted on YouTube. A number of these episodes address film miniatures and their use. I thoroughly enjoyed watching these programs and recommend them for those who enjoy film miniatures. Lots of old-school goodness here!
Movie Magic: Models and Miniatures
Movie Magic: Action Miniatures
Movie Magic: Forced Perspective
Movie Magic: Miniature Pyrotechnics