Teenage star Daniel Radcliffe felt like an adult for the first time on the set of his new film DECEMBER BOYS - because the cast was so young. The Harry Potter star, 18, was the oldest of four actors playing orphans in the film, which finished shooting in Australia earlier this year (07). He explains, "I was the oldest and I did feel a certain paternal instinct. I wanted to protect them. "There were times when it was the end of the day and I was really tired, and they had almost as much energy as they had at one o'clock in the afternoon. "And I found myself saying things like, 'Please stop shouting so loudly in my ear!'"