These videos from Buzz Image manage to be some of the clearest demonstrations and explanations I've seen of modern visual effects techniques, and they do it entirely without narration. Eternal Sunshine of the Spotless Mind is delightful for any fans of that movie. Brokeback Mountain is a good example of effects that the viewer is not intended to notice. In this case I can't help being a bit jaded by the knowledge that some of the amazing natural beauty in the film was not so natural. This one also shows an example of shooting day for night--I never understood how that could end up looking right (according to Wikipedia it is rarely done these days). Raw footage from The Aviator shows the kind of performances that actors are often called upon to make today, like standing in front of a green screen in a sweatshirt and mimicking closely a few gestures and facial expressions from historical footage. The music and sound effects in all of the videos are very nicely done.