J. R. R. TOLKIEN: THE BOOKS, THE FILMS, THE WHOLE CULTURAL PHENOMENON; INCLUDING A SCENE-BY-SCENE ANALYSIS OF THE 2001-2003 LORD OF THE RINGS FILMS by Jeremy Mark Robinson 
(1) eight hundred page books really shd have indexes. The absence of one here means any passage that catches yr eye is pretty hard to find again. For instance, so far as I can tell from the Table of Contents there's only one two-page section of this book devoted to THE HOBBIT (pages 260-261), and it concerns itself entirely with retelling (not entirely accurately) the story of how that book got published.
(2) the author starts off by listing fourteen authors he prefers to Tolkien (pages 11-12).* This cd be seen as A Bad Sign: if he feels that way, why not writing about them instead? Why not a book on Le Guin's Earthsea and its two film adaptations, the horrible Sci-Fi channel miniseries and the Miyazaki Jr. anime? Answer: because, being about LeGuin, only a fraction of people wd buy it compared to those who'll buy a book about the Tolkien films sight unseen.
(3) similarly, Robinson lists fourteen directors he wd have preferred to have worked on the LotR films over Jackson (page 345), including Kurosawa (who's dead), David Lean (likewise), Werner Herzog, Ingmar Bergman, Terry Gilliam, Borman, Orson Welles, and, most bizarre of all, Sam Peckinpah (!). This, despite his belief that some of those he names "none . . . would be quite right for Tolkien's kind of story". The mind boggles.
(4) however, it's hard to take Robinson's Jackson-bashing seriously, once you realize he hates the Peter Jackson films so much that he tries to denigrate them through a point-by-point comparison with Bakshi's cartoon, which he much prefers. For example, he attacks Jackson for having some characters undergo so much make-up and prosthetics that it interferred with their ability to express facial emotion (page 341).** Fair enough. But then in the very next sentence of the same paragraph he praises Bakshi for having his actors wear masks so it was quicker to get them ready for filming. This makes sheer nonsense of his argument.
(5) Robinson has a casual approach to accuracy. Sometimes these are simply slips ("Christopher Manlove", "R. Purhtill").*** Others seem to reveal a superficial knowledge of the material. For example, Roy Campbell and Roger Lancelyn Green ought not to be listed as members of the Inklings (page 39). Elaine Griffiths did not "[work] at Allen & Unwin's offices (on Tolkien's recommendation)" (page 260). Christopher Wiseman did not die on the Western Front in 1917, as Robinson claims (page 25) -- as I can personally testify, having met him in 1981 and again in 1985. Robinson also occasionally makes up details in what's meant to be facetious mockery of Jackson's work (e.g., pages 340 and 344), so you never really know if what he's saying is true, meant to be true, deliberately false in an attempt at humorous exaggeration, or simply wrong.
(6) even more oddly, Robinson seems to forget what he's written from one paragraph to the next. For example, he includes "The Immigrant Song" in a short list of Celtic-inspired Led Zeppelin songs (page 192), then on the next page (accurately) notes that the song is told from the point of view of a Viking raider -- which is not v. airy-fairy Celtic at all. And let's not even get into his describing their song "Kashmir" as another of their Celtic-themed songs (does he even know that Kashmir is not in Wales but on the India/Pakistan border?)
(7) At first I thought the book improved and the accuracy picked up when I got to the part about the films (500 pages out of the 800 page total), then realized I needed to evoke Grubb's Law: just because I knew less about this material, and thus spotted fewer mistakes, didn't mean his accuracy had actually improved. On the whole, though, his giving his opinion is preferable to his giving facts about Tolkien's life and books, since I assume the opinions are genuine whether I agree with them or not, whereas an unknown but too high percentage of his 'facts' are just plain wrong.
In the end, I'm really left wondering who the audience for this book is. It's too long, and much too expensive, to tempt any casual reader. It's too careless to hold up as scholarship. It seems aimed at people who love Tolkien but despise the movies, yet who's going to spend fifty dollars to read eight hundred pages about a movie they dislike? Maybe things will become clearer to me on a more careful reading that are a little murky on a mere skim.
Postscript: and I have just learned this weekend that Robinson also released a second book about Tolkien on the same day as this one: J. R. R. TOLKIEN: POCKET GUIDE (272 pages, $22). I confess that I suspect this is an abridged version of the larger book, with all the parts about the movies stripped out -- not least because the three paragraphs from its Introduction given on amazon (http://www.amazon.com/gp/product/1861712782/ref=oss_product) appear, word-for-word identical, in the larger book.
*including Petrarch, D. H. Lawrence, Jn Cowper Powys, Henry Miller, Hardy, Chuang-tzu, Byron, and Le Guin.
**Rhys-Davies' Gimli being a case in point. It's to be hoped that Jackson & Co. simplified the dwarf make-up for the new HOBBIT movie, or there'll be real trouble here.
***every book has this type of regrettable lapse -- my own most cringeworthy offender in HISTORY OF THE HOBBIT being a passing reference I made to Jn Gower as the author of PIERS PLOWMAN -- gah! All you can do is keep them to an absolute minimum and fix them as soon as some sharp-eyed reader catches them.