Howl's Moving Castle (Hayao Miyazaki, 2004)
I appreciate this movie more each time I watch it. The story is wonderfully whimsical, it's pure fantasy in the most fun way. Sophie is a wonderful protagonist, and a great guide through this crazy story. It's ultimately a personal story about her, but there's also a lot going on in the backdrop that is really fascinating. The awesome steampunk world, all the character's histories, the politics of the war, the mythology of sorcery: it all adds a considerable amount of depth to an already entertaining story.
I was watching it with someone who hadn't seen it before, so I was a lot more conscious about the ending, which is admittedly, very silly. Not necessarily in a bad way, there's something kind of awesome about how quickly and neatly everything manages to wrap up, but it is startlingly upbeat. The only thing I can't really get behind is the song that plays during the ending, which I feel takes it too far over the top and distracts from what's going on (not helped by the song being translated into the subtitles over the dialogue...Come to think of it I should check to see how they handled it in the English dub).
I'd really like to check out the source novel now, as I imagine it elaborates on a lot of the elements I love from the movie.