Like much of Werner Herzog’s work, Grizzly Man has moments of poetry as well as dark humor. But Timothy Treadwell, the central figure of this documentary, suffers a fate so horrific that it’s shown in the film only via Herzog himself listening to audio of the incident and advising that it be destroyed and never played for anyone ever again. The audio exists because Treadwell documented his life among the bears in Alaskan wilderness; some of the astonishing footage appears in the movie, as Herzog ruminates on the “chaos and murder” he sees in the natural world Treadwell so adores. You may want to chase this experience — or this entire list — with Herzog’s Encounters at the End of the World, another nature-related doc with less grisly results.