A new comedy which opened in cinemas in Egypt this month has achieved what intellectuals and human rights activists have failed to do. It has got Egyptians talking about tensions between the country's majority Muslim population and its Christian minority. The film, Hassan and Morqos, co-stars Egyptian comedy legend Adel Imam as Boulos, a Coptic Christian priest, and Alexandria-born Hollywood star Omar Sharif as Sheikh Mahmoud, a Muslim preacher.