VIDEO : Matt Damon Spills the Big Secret Behind His Ponytail

There was one very important issue discussed when Matt Damon appeared on The Graham Norton Show on Friday: the actor's lush ponytail , which made its debut back in July. As Matt explained on the show, he filmed a movie in China, so he was there for about five months "with that, uh ? that thing."Matt said, "It wasn't real! It was hair extensions."