[Airehiriel]

I agree with the belief that no one could make that perfect film. Even if you could take the book and use it as the script, it still wouldn't be quiet right. I think it has to do with the preconcieved notions we are all carrying around about how things should look, how characters should act, even down to the particular way a line should be said. And the difficult thing is, none of us carry the exact same notion. So while I may love every second of it, another would complain that Sam didn't say that one line quiet right, Lothlorien didn't have quiet the rightfeel, Aragorn didn't walk quiet right...and so on and so on.
Christopher would have his own set of notions as well, they, perhaps, being closest to what JRRT really meant. But I think even if Tolkien himself had turned the whole thing into movies, we might sit back and scratch our head, thinking, "THAT'S not what I pictured."
There never will be that perfection, there never can be. So we all have to either sit back and enjoy or simply endure the ride we are taken for by someone else's imagination.