I completely forgot about this book since I hadn't seen it in any bookshops or libraries (I wanted to peruse it before purchase). So, unfortunately I can't really comment on it.
However, one thing that I was worried about was that the Essays wouldn't be that interesting or provide any new insights because we've already discussed the films pretty much to death and probably to a greater depth.
(And btw, Voronwe, I got the information about the essays from TORn)