In 1998 a dive boat accidentally left two scuba divers on holiday marooned on a reef. A powerful new film. Open Water, based on the story, reconstructs their struggle to survive in the shark-infested sea as dehydration and the cold set in. Chris Tookey talks to the film-makers about their controversial project. And if you thought fast food really didn't do you that much harm, wait until you see Super Size Me. Producer Jerome Weatherald