Which movies are better than the books they're based on?

Many people when watching the movie after they read a great book get this feeling, well, the movie was okay, but in no way can it compete with the book it’s based on. But there might be a few exceptions like “The Godfather” or “Contact”. I like all science books written by Carl Sagan, and his novel “Contact” is okay, but I think the movie is a lot better.

There were a few cases when I saw the movie first, like Jurassic Park, and then bought and read the book. In this particular case I found the movie and the book to be equally great.

What is your view? You got any examples?