Welcome, Bilbo.
I'm a big fan of the Peter Jackson trilogy (except the ghost army deus ex machina). Yes, I have attended an all-day marathon of the extended editions.
The movies are better than the books. Tolkien was a great creator of fictional worlds, but not a great writer of fictional stories. If alive today he'd have a great career with Wizards of the Coast.
My pet peeve with LOTR is that Sauron deserved to win. Frodo failed. The day is only saved by Gollum's insanity. I found that really unsatisfying.