I have to disagree on One Flew Over the Cuckoo's Nest. I read the book three times, I loved it so much, and then saw the movie many years later. It is a very good movie, certainly Nicholson is phenomenal. I appreciate that the movie stands on its own as a great movie. But the book is still one of my very favorite books, with a different message from the movie.
Which leads me to a theory. For those who said the movie was better than the book, which did you see/read first, the book or the movie? I'm thinking you can only like the movie best if you saw the movie first. Agree, disagree?