Rent the documentary called "Grizzly Man". It's about Timothy Treadwell, who spend 13 summers with grizzlies in Alaska, unarmed with a tent and a cam-corder, until he was eaten in the fall of 2003. There's amazing footage and interviews, and I must say that as the summers went on, Timothy grew more and more bizarre until he mentally just unravels before the camera. It's a must-see film..trust me on it.