Tom Cruise performs a hair-raising stunt dangle in Duabi.The star is filming at the Burj Khalifa, which stands 2,717 feet tall, for his new movie Mission: Impossible 4. The stunt is thought to involve Tom jumping over another actor during a chase around the exterior of the huge building. The scene was being filmed at the Observation Deck level which is 124 floors high. A helicopter just ten feet away from the building was being used by the film crew to get close to the action. [CFP]