U.S. actor George Clooney smiles after South Sudan's President Salva Kiir cast his ballot at a polling station in Juba, south Sudan January 9, 2011. Millions of south Sudanese started voting on Sunday in a long-awaited independence referendum that is expected see their war-ravaged region emerge as a new nation. Clooney, a long time campaigner in Sudan, particularly over its separate Darfur conflict, attended celebrations for the countdown to Sunday's vote.[Photo/Agencies]