I was so engaged that I read the book in a day instead of stretching it out. Lots of interesting info. The backstage in-fighting was fascinating and so were the accounts of the evolution of various Superman TV shows and movies. Since the other reviewers have hit a lot of the high points, and at the time that I purchased the book, no table of contents was attached, here's a breakdown of the subjects covered.
The first couple of chapters cover Bud Collyer,Kirk Alyn, and George Reeves, as you might expect. The middle section deals largely with the Salkinds, Richard Donner, Richard Lester, and Christoper Reeve; the making of Superman I-III. There's an excursion by one chapter into the Salkinds' Supergirl movie and it's effect on the Superman franchise. There are also scattered references throughout the book to the Batman TV shows/movies and that franchise's effects on Superman. Spiderman and other superhero movie/shows are referenced, but Batman gets the most page time.
The Cannon Group and Superman IV are also discussed. Then we move onto the Superboy TV show and more on the Salkinds. The next bit covers Lois & Clark and there's a brief visit to Bruce Timm's animated version of Superman. Smallville is also dealt with. Most of the latter portion of the book is about with the scripts, producers, and actors contemplated for various possible versions of a new Superman movie before Superman Returns was decided upon. Bryan Singer and the making of Superman Returns are also discussed.
On the whole, this is a very intriguing look. I wish the author had been less cursory in the discussions of Smallville and had gone into more detail with the animated versions of Superman, but I would recommend this book to any Superman fan.