By Lisa Schwarzbaum
Updated March 16, 2012 at 04:00 AM EDT
Christine Plenus

Add young Thomas Doret to the short list of nonprofessional kid actors who, aided by gifted directors, deliver truly astounding performances. It’s impossible to tear one’s eyes away from Doret in this typically naturalistic, unsentimental drama from the superb Belgian filmmakers Jean-Pierre and Luc Dardenne (Rosetta, The Son) about a sad, furious 11-year-old boy, abandoned by his father and taken in by a hairdresser (Cécile de France), to her own surprise. No one charts the wilds of childhood more precisely than the Dardennes. A