Among manga and anime nerds, "Astro Boy" is a big name--like, "Mickey Mouse" big. In the States, though, Astro Boy is hardly an icon. Regardless, now Astro Boy has his own big-budget animated film, full of the requisite shiny CG and accompanied by the familiar glut of B-list celebrity voices. For what it is--a non-Pixar animated kids' flick--Astro Boy isn't bad, but it's nothing spectacular, either. by Erik Henriksen