This is a review by someone who has been reading super-hero comic books for more than 50 years, including reprints of the great comics that were produced during the 25 years before that. I have no way of judging this three-part documentary from the viewpoint of someone without that immersion in the art form or of someone whose interest in superheroes is based solely on the superhero movies and TV shows that have overtaken our culture.
That being said, I was very surprised (and pleased) that this documentary stuck so closely to the comic books themselves rather than devoting more time to the films, especially since clips from the movies are now so available and many more people have seen a Batman or Spider-Man movie than have actually read the comic books. Oh, there are many clips from the TV shows and movies, from the 1940s serials and Superman theatrical cartoons to the 1950s Superman TV series, the 1960s "Batmania," the 1970s blockbuster Superman movie and so on, but they are only a small part of this three-hour examination of the impact superhero comics have had on our culture.
Much more time is spent on how the content of the super-hero comic book has changed over the past 75 years, from Superman's initial appearance to today, with an emphasis on how the comics have reflected major turning points in society such as World War II, the Atomic Age, McCarthyism, the Civil Rights Movement, Feminism, the disenchantments of the 1970s, and of course 9-11 as the threshold of our current era. Even acknowledging the growing success of super-hero movies, the emphasis is more on what was happening in the actual printed comics: the ways they changed with the times and in some cases how they did not.
Some of comics' greatest creators are interviewed or at least briefly credited during this program, from Siegel and Shuster to Simon and Kirby, from Joe Kubert to Carmine Infantino, Bob Kane and Jerry Robinson, Neal Adams and Jim Steranko, Frank Miller and Alan Moore and, of course, Stan Lee and his revitalization of this art form in the 1960s with a creative vision that survives even today.
If you are a comic book fan, meaning you recognized all of the names in the previous paragraph, you will find much to like in this documentary, which touches on a very wide number of issues in its examination of this unique art form. If not, I'm not sure how interested you will be in this subject matter since it is not movie-centric, but as a comic book geek I enjoyed it very much.