Two other non-pornographic films that have angle options on the extras I saw recently:
Men In Black II: An extra features the ability to switch between a rough draft of a scene with simple computer graphics and special effects, and the final product.
Ice Age: An interesting one. You can watch three scenes evolve. There are five angle options: storyboard, stand-in computer graphics, early animation, final product, or all at once. Some of these are interesting. It’s especially strange to watch the rubbery Scrat shown as a robotic character that jumps around and shows no emotion.