Totoro is probably the best for your kids age. Ponyo and Kiki's Delivery Service might also be good around this age. A lot of suggestions for Spirited Away, bu

Totoro is probably the best for your kids age. Ponyo and Kiki's Delivery Service might also be good around this age. A lot of suggestions for Spirited Away, but I think you're going to need to wait a few years for your kids to appreciate and connect with it -- I'd say 7 or 8y/o. Around that same age, Castle in the Sky and Nausicaa become palatable too. A little after that you can probably introduce them to Porco Rosso and Howls Moving Castle -- they both touch on some war stuff that might be hard for young kids to understand. Whatever you decide though, hold off on Princess Mononoke until they're older. That one to me is the most visually jarring one, and I'm glad I was as old as I was when I first saw it because a younger me would have definitely had a nightmare or two.