I especially appreciated Galadriel's kindness to Gimli. It reminds me of when I was a college sophomore whom the girls on campus did NOT consider a desirable date; one beautiful and popular senior girl, though out of my reach romantically, showed me kindness which was a morale-booster for me. Gimli's purehearted, unselfish devotion to Galadriel, inspired by her kindness to him, is one of the uplifting things about LOTR.
NOT so uplifting was what Tolkien did--if I have not misread him--to the marriage of Galadriel and Celeborn. I've said elsewhere that I was not yet a Christian when I first read LOTR, and that some things in it actually _hindered_ me from getting spiritual benefit out of the story. One such hindrance was the idea that Galadriel could go back to the True West, but Celeborn couldn't. Even as an agnostic, I had the reaction, "What does Tolkien mean by compromising the holiness of marriage, letting a married couple be split up by the will of the nearest thing to God present in the story?" There's a case where a movie does improve on the book: the movie of ROTK indicated that Celeborn _did_ also get to sail west.