I love it ! And yes there is lots in there thats probably well known to some since a significant portion of the book is a collection of previously published interviews from a variety of different sources. What I really like are the articles that discuss the movie (and the book) in terms of its social impact at the time, the movies pedigree among other horror films of its day and those that preceded it, the commentary on the far reaching discussions it opened up from audiences to film students and scholars all the way up to the Vatican.
Theres also some funny stuff that I bet Friedkin forgot he said like telling a reporter that the levitation scene was not done with wires but by using “magnetic fields” when you can actually see the wires and Owen Roizmen describes in his own interview how they painted the wires out …
I think its a cool book 🙂