The late Dr. Tezuka, the creator of Astroboy, does cameo-appearance twice. That was cute.
1) All the deep philosophical stuff that Dr. Tezuka tried to convey... this movie had altered it a little bit more toward the American taste... but it still retained most parts of the messages that he wanted to convey.
2) I think the kids will love it. This flying robot will be their hero.
3) The ending is semblant to "Fantastic Island of Unico," which is yet another charming creation by Dr. Tezuka.
4) Stephen Spielberg should now acknowledge where he got his ideas about A.I. from, now that this movie made it apparent to everyone.