Matt Damon was left stunned and speechless when he was awarded a surprise honour at the UNICEF Ball in Beverly Hills, California on Tuesday night (14Jan14) after paying tribute to his Behind The Candelabra co-star Michael Douglas. The movie star helped to host the event and presented his pal with the night's Danny Kaye Humanitarian Peace Award, but he had no idea he'd be taking home a prize too. At the end of the ceremony, Damon, who ditched an arm sling he's wearing to help him recover from a mountain biking accident for the gala, was handed a trophy to recognise his work with clean water and sanitation charity water.org. The flustered actor said, "Oh my God... Come on... This is totally unexpected. I was here to close the show."