`The Score' star Robert De Niro remains something of a mystery.(Knight Ridder Newspapers) From: Knight Ridder/Tribune News Service | Date: July 6, 2001| Author: Rodriguez, Rene | COPYRIGHT 2001 Knight-Ridder/Tribune News Service. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

NEW YORK _ Has there ever been anyone better at portraying unhappiness than Robert De Niro? When you think of the actor's greatest performances _ the ones that earned him his iconic status, the ones that even people who don't pay much attention to movies can recognize when they hear them quoted _ you think of rage, alienation, pain. You think of obsessed loners and scrappy misfits, frustrated dreamers and tortured, inexpressive men who would really, really like it if the world woul...