The winner of the best feature documentary at the 2008 Academy Awards will be shown again on BBC Parliament on Saturday at 2130 GMT.
Storyville: Taxi to the Dark Side
Taxi to the Dark Side tells the story of Dilawar, a young Afghan taxi driver, who was arrested by American troops with his three Afghan passengers in December 2002.
Five days after his arrest Dilawar died in his prison cell.
Autopsy evidence concluded that he had died due to injuries inflicted by US soldiers at the prison.
This programme contains scenes which some may find upsetting and images and accounts of torture.
The documentary goes over the details of the last weeks of Dilawar's life and investigates the interrogation methods used by the US forces in Afghanistan.
Taxi to the Dark Side was directed by American film-maker Alex Gibney working with Australian producer Eva Orner.
It received a cinematic release in the States and beat Michael Moore's expose of the US medical system, Sicko, to take the Oscar.
Taxi to the Dark Side was originally shown as part of Storyville's Why Democracy season on BBC Four last autumn and repeated on BBC Parliament.
BBC Parliament showed twelve hour-long films focused on contemporary democracy as part of the world's largest ever factual media event.
More than 40 broadcasters on all continents participated.
The films were made by independent award-winning filmmakers from around the world, including China, India, Japan, Liberia, USA, Bolivia, Denmark, Afghanistan, Egypt, Pakistan and Russia.
With subjects ranging from US torture methods to the election of a class monitor in a Chinese primary school to the Danish Cartoons scandal, the films take a wide-ranging and in-depth look at the world we live in today.
Watch Taxi to the Dark Side on BBC Parliament on Saturday at 2130GMT.