So far I've seen: Kiki's Delivery Service, Princess Mononoke, Nasicaa: Valley of the Wind, Spirited Away, My Neighbor Totoro, and Laputa: Castle in the Sky. I have yet to see Howl's Moving Castle, but of the ones I have watched, Laputa: Castle in the Sky is by far my favorite! It rivals my absolute favorite movie Card Captor Sakura 2.