Actor George Clooney (R) smiles onstage with his father, journalist Nick Clooney, after the elder Clooney addressed the crowd at a rally to stop the crisis in Darfur, on the National Mall in Washington April 30, 2006. Several thousand Americans, led by religious leaders, entertainers and politicians, marched on Sunday to urge the United States to halt "genocide" in Sudan's Darfur region. REUTERS/Jonathan Ernst