DIRECTED BY Gaspar Noé STARRING Vincent Cassel, Monica Bellucci, Albert Dupontel Opened January 31, Cert 18, 95 mins You probably heard about this shock-rocking rape-and-revenge drama from the stir it caused on the festival circuit. And for once, controversy and PC posturing are not being orchestrated into a publicity stunt. Irréversible is as visceral, graphic and wrenchingly full-on as advance word suggests.