The 2015 Best Documentary - Feature Oscar went to
Citizenfour.
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Taxi to the Dark Side (2007) won the Academy Award (Oscar) for Best Documentary Feature (Alex Gibney and Eva Orner).
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An Inconvenient Truth is a documentary film about Al Gore's
campaign to educate people about the global warming crisis
affecting the world. It was filmed in 2006 and has won an Academy
Award for Best Documentary Feature.
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AACTA Award for Best Feature Length Documentary was created in
2009.