You have to admire the effort, Rabin covers over 500 movies about the movies, that is, films about filmmaking. Because his survey is so expansive he is not able to really delve into these films so he usually supplies a short paragraph introducing the film, a short synopsis of the plot along with a few concluding remarks - masterpieces and throwaway films are given the same amount of space.
Some things I noticed about the author. He REALLY isn't down with actors playing characters who are of different ethnic groups or races. The politics of the actors and filmmakers really matter to him. He seems to have sort of a Victorian outlook towards sex in the way he talks about these films.