If we're talking about the Hobbit here, I think Battle of Five Armies was my favorite, which surprises me greatly. I love AUJ and DoS, of course, but the first one seemed just a tad excessively slow-paced, and the second one lacked a central theme like the other two. BoFA had its bad parts too, obviously (Gundabad, Tauriel/Kili, very little Beorn), but it also had great stuff like the Attack on Dol Guldur - which, honestly, should have gone on longer - and the scene where the Wood Elves arrive in Dale, the Arkenstone, Thorin's death, Eagles, auction, and most everything else. And of the three Hobbit movies, it was the only one that ended somewhat emotionally: in LotR, each movie ended with that beautiful, stirring score, something both triumphant and sad, something poignant, a powerful conclusion to each film. AUJ ends with Thorin hugging Bilbo, which, while very sweet, had no real emotional impact for me. DoS had no real power in the ending, except Bilbo's line. BoFA had Bilbo's farewell, which would have been heartbreaking if any of the Dwarves but Balin and maybe Bofur had been more than props. The auction was really touching though. The Hobbit movies, for me, are beautiful and incredible and wonderful, and they have tremendous action and high mystical danger, and a sense of leaving the real world and entering Faerie, but they are not, to me, very emotional until Fili's death in BoFA. And I'm fine with that, frankly, because I like them, but the Lord of the Rings strikes a chord with me that brings me to tears every time I watch it.
(Oh, in DoS there is
I See Fire, which makes the whole movie feel very epic and powerful, and does actually have a lot of emotion packed into it. I love that song. And in BoFA there is the
Last Goodbye, which is also emotional and very Tolkienesque in its structure: those two songs make me forgive all problems in the Hobbit trilogy.

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