Here's some assorted Bratman quotes I found on the web:
I give Jackson an A on visuals and props, a B on the films as independent pieces of work divorced from the book, a C on faithfulness to Tolkien's story and detail, and a D (but only because I won't give an F when the student has shown evidence of trying) on faithfulness to Tolkien's spirit and tone. (link)
At this point it is necessary to reply to those who claim that films don't affect them, and that anybody except the weak-minded, the weird, or the juvenile can simply will themselves not to think of the film version while reading the book from which it was made. An epic, detailed, captivating film dramatization of a book somehow has no effect whatever on the mental state or image of the reader. Anybody for whom that is true must be one of those rare people who can win at the game whose object is not to think of a purple elephant. Such iron-mindedness is simply not the common [norm?] of humanity. (link)
And a movie can bury a book. Fans of L. Frank Baum have been forlornly complaining for over 60 years that his Oz books are quite unlike the famous film. And they're correct. But nobody listens to them. They think they know what Oz is like: they've seen the film. (link)
Incidentally Bratman approves of http://arthedain.netfirms.com/ , a criticism site by "philosopher at large" aka "Bellatrys", which I've pointed to before. (link)It doesn't matter where the book is, if the film is in the head. (link)