'Disturbing Behavior'
Greenwood, slumming here after his last appearance in the exquisite "Sweet Hereafter," goes the whole foam-flecked, mucus-spewing route ("Today high school, tomorrow the world!") as Dr. Caldicott, a screwball who plants some kind of chip (computer, not potato) in the eyes of bad kids, and turns them into models of dreary rectitude, except when they