Animation is serious business in most countries, and while America has no shortage of talented animators, the genre is being held hostage by Hollywood’s insatiable desire to market anything animated to children, says Ty Burr. “Aside from the stray burst of maverick inspiration — Tim Burton’s stop-motion Corpse Bride or Richard Linklater’s rotoscoped A Scanner Darkly — most alternative animation comes from overseas, where grown-up audiences have always been less uptight about the form.”