As I mentioned I just finished reading ...Shawshank Redemption and was surprised that our Jake is a pigeon???? HUH??? Sir Brian, is there some history here??
The Shining is one of my favourite horror films. If it had been more true to the book... it wouldn't have been nearly as good. What works in a book doesn't necessarily work in a film.
I found Congo (the movie based on the book by Michael Creighton) far more entertaining than the book itself. Usually, it's the other way around. I must admit that I watched the movie first, and then I bought the book. I found the book incredibly boring.
IMHO, Crichton always dropped the story toward the end.