It?s not rare to hear of stars doing their own stunts, but it?s not everyday that you hear of an actor risking his life for a bit of on-screen daredevilry even when the director and the insurance company advise him against it. Abhishek Bachchan jumped off a cliff, plunging down 90 feet, straight into a river for a scene in Mani Ratnam?s Raavan.