This 90 minute journey thru the first hundred years of cinema history is amazing with over 267 stars, directors, historians seen, appearing or speaking about the highlights. I find it funny that someone on IMDB reviewing it finds fault that it does not go into more detail. Let's see, they cover 100 years in 90 minutes, that's less than a minute a year... but for all those 90 minutes it is fascinating! Just try getting someone who only watched videos on their phone to sit still for 90 minutes. There are "hundreds" of good documentaries about the history of movies, and none of them covers everything. But if you enjoy discovering more, I suggest you see Kevin Brownlow's HOLLYWOOD series which comes in 13, hour long episodes and only covers silent film. Brownlow's HOLLYWOOD like his book THE PARADES' GONE BY is just the starting point for appreciating early cinema. There are countless volumes of books dedicated to the history of film, and particularly to the legacy, scandal and extravagance of golden-age Hollywood. But over the years, several film scholars and critics have reached into the realm of documentary film to spread their knowledge further. These educational docs-in the guise of easygoing entertainment and spot-the-celeb appearances-are valuable for anyone who wants to brush up on the background of the American film industry.
I also recommend: These Amazing Shadows (2011); A Personal Journey with Martin Scorsese through American Movies (1995); MGM: When the Lion Roars (1992, 6 hours); You Must Remember This: The Warner Bros. Story (3hrs, 48m) and The Story of Film: An Odyssey (at 900 minutes) that covers international film.