The actor, who has attracted legions of fans since landing the role of boy wizard Harry Potter, reveals some admirers give him unusual gifts to show their devotion.
He said: "One Japanese fan sent me a present - a plastic ear. It was rubbery and you were supposed to fold it up and hold it in your hand, then walk into a party and go, 'Oh my God, there's something wrong with my ear!' and let it unfold. Everyone thought it was weird - then I found out that it's a famous Japanese comedian's best joke!"