Howl's Moving Castle, awesome movie, Hayao(thats it right?) Miyazaki(again, its right?) is awesome, Princess Mononoke is my fave of his movies, my friend has like, almost all his movies...
I heard Cat Returns was also good.
I also read the book, Howl's Moving Castle, and there were a few differences, but they were both extremely enjoyable, I also liked reading the sequel to Howl's Moving Castle.