For a film nerd, this is fascinating. It is entertaining, intriguing and educational. For non-film nerds, this is probably a bore, though it may open some eyes and ears. Sound is the forgotten and overlooked aspect of filmmaking and for the vast majority of filmgoers it will sadly, for these very essential artists, always remain so. One note of concern for me. This is all about sound in film in this digital age of being able to control and alter nearly everything including voices and the same applies to audio recordings and the alteration of singers' voices to make then sound better, to improve their vocal quality. This was brought to mind by the appearance of Streisand and her "My Man" comments. She has one of the great voices of the modern era, but she hasn't made a recording in many years that doesn't sound over-manufactured. It's all very pretty, but much of it sounds artificial without any real feeling involved. It sounds dishonest. I use her as an example as I've followed her since the 60's and can hear the difference, but I'm sure this is much more true with far less talented singers than her, but who can tell?! This is something that I don't like about the manipulation of sound that we have nowadays, but this documentary is about film and it is what I said it was. A must for film nerds. The Star Wars and Saving Private Ryan examples were awesome, but so are some others. These are very important and creative people in the creation of making films.