Werner Herzog's 2007 Antarctica essay. Oscar-nominated; the suicidal penguin scene alone justifies the canon entry.
From Wikipedia
Encounters at the End of the World is a 2007 American documentary film by Werner Herzog about Antarctica and the people who choose to spend time there. It was released in North America on June 11, 2008, and distributed by ThinkFilm. At the 81st Academy Awards, the film was nominated for Best Documentary Feature.