What parts from the book Lord of the Rings should have been included in the movies?

I’m reading it again, and there’s a lot of cool stuff in the book that never made it in the films.
That’s, of course, to be expected, you just can’t fit alla that in a film…but still, last time I read this I was 14, so it’s all like new again. There’s lots of cool things that I forgot, which weren’t in the movie.
(The old forest for example.)
So, what parts from the book did you like and think shoulda been in the movies, or at least, would have liked to see in movie form?