Harry Potter star Robbie Coltrane is no longer interested in making Hollywood films, because they are almost always aimed at teenagers. The Scottish actor believes the movie industry needs to start making more films for mature audiences. He says, "Most movie blockbusters are made for 12 to 18 year olds and are about huge things blowing up. There are no relationships and the sex is fumbly and shallow. "God! When did you last see a really good American movie that was made for adults?"