what films can be described by studio ghibli? Spirited Away, Princess Mononoke, Howl's Moving Castle, My Neighbor Totoro, Grave of the Fireflies, Castle in the Sky, Nausicaä of the Valley of the Wind, Ponyo, Kiki's Delivery Service, Porco Rosso, The Wind Rises, The Cat Returns, Whisper of the Heart, From Up on Poppy Hill, Pom Poko, Only Yesterday, My Neighbors the Yamadas, Ocean Waves, When Marnie Was There