Surviving child-stardom is challenge enough. Usually chosen for their appeal to other kids, cinematic prodigies are so often stuck in a rut, fronting just a few teenie hits before adolescence and acne bring the hammer down on their career. It's a problem seldom overcome, yet Elijah Wood managed it. After his first (very) public appearances at the age of 8, he managed to pick a succession of roles that would keep his profile high and also allow him to become a real, grown-up actor. But then, as if avoiding becoming the next Macauley Culkin wasn't sufficiently tough, he chose to take on a part that might cement itself in the world's imagination so tightly he could never be accepted in another. Who could wear the hairy feet of Frodo Baggins and still convince in modern dramas? Surely this would be the (ho ho) hardest hobbit to break?