Howl's Moving Castle (2004)
Directed by Hayao Miyazaki
Genre:
Fantasy | Adventure
Synopsis:
When an unconfident young woman is cursed with an old body by a spiteful witch, her only chance of breaking the spell lies with a self-indulgent yet insecure young wizard and his companions in his legged, walking castle.
Commentary:
I think this is the film most people have already seen from the list, but I had to add it because it made a big impact when I was young and I think it really shaped a lot of the things in terms of aesthetic and stories.
If you have already seen the film, I highly recommend the book, and if you like this version of Howl Pendragon as a character, you're going to love Christopher Chant from The Chronicles of Chrestomanci. All of these novels were written by Diana Wynne Jones!