This actor's third role (uncredited, his first as a teen) was the MAD Magazine produced Up the Academy, a film directed by this man's father (this film was Ralph Macchio's film debut, but it isn't Ralph). He has been Oscar nominated twice (for playing a real Briton and a fictional Aussie). Name this actor who had supporting roles in films like Soapdish, Natural Born Killers and Gothika.
Robert Downey, Jr.