Virgin boss Richard Branson threw a glass of water over U.S TV host STEPHEN COLBERT after he was banned from talking about his new budget airline. Branson was being interviewed by Colbert in a front of a live studio audience in New York when he attacked the host. Colbert, who fronts The Colbert Report, retaliated by throwing a bottle of water at Branson. A Virgin spokesman insists Branson was invited on the show to talk about his new low cost U.S. service, but was banned from doing so once the cameras started rolling. The spokesman adds, "Richard did throw his water over Stephen. As most people know, Richard can be unpredictable."