Grizzly Man.

Just watched this on DVD. An utterly absorbing and masterful piece of cinema. The tale of Timothy Treadwell, a well meaning, likeable but disturbed young man who spends his life living with bears, and is eventually mauled to death, in the Alaskan widerness. He filmed himself over many years with a hand held camera. As the film unfolds, Treadwell begins to talk more about himself. It becomes clear that this is a man who has had great difficulty in relating to other humans throughout his life and who seeks emotional security and acceptance amongst some of the wildest animals in the world. Eventually, he loses it completely and stands ranting to the camera in a truly uncomfortable and cringe inducing scene.

Interspersed throughout the film are moments of magical charm, such as his befriending of a family of foxes as well as moments of utter terror as he squares up to huge grizzlys defending their territory. As director and narrator, Werner Herzog, observes, it becomes a film not just about Treadwell but about mankinds relationship to the world.
Unique and highly recommended.