All the biopic Best Picture winners at the Oscars -  In this gallery, we look back at the biopics that have won Best Picture in previous editions of the Academy Awards. Click through to revisit last year's winner 'Green Book' and its classic counterparts.

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'Green Book' -

'Green Book' centers around the friendship between pianist Don Shirley (Mahershala Ali) and his driver Tony Lip (Viggo Mortensen). But the real Don Shirley's family is said to dispute the film's accuracy, so whether or not 'Green Book' is a true biopic is still up for debate.

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'12 Years a Slave' - This film tells the story of Solomon Northup, a free black man who is kidnapped and sold into slavery.

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'12 Years a Slave' - The movie won the Oscar for Best Picture in 2014.

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'The King's Speech' - 'The King's Speech' centers around King George VI and his struggles with stuttering.

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'The King's Speech' - The film won the Oscar for Best Picture in 2011.

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'A Beautiful Mind' - 'A Beautiful Mind' tells the story of mathematician John Nash, a Nobel laureate in economics.

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'A Beautiful Mind' - The movie won the Oscar for Best Picture in 2002.

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'Braveheart' - 'Braveheart' is a biopic about William Wallace, a knight and leader who fought for Scottish independence from the English.

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'Braveheart' - Mel Gibson's film won Best Picture at the 1996 edition of the Academy Awards.

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'Schindler's List' - 'Schindler's List' centers around Oskar Schindler, a German businessman who helped rescue Jews during WWII.

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'Schindler's List' - The film won the Oscar for Best Picture in 1994.

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'The Last Emperor' - 'The Last Emperor' tells the story of Puyi, the last Emperor of China.

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'The Last Emperor' - Bernardo Bertolucci's film won the Oscar for Best Picture in 1988.

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'Out of Africa' - 'Out of Africa' is set in Kenya and centers around Karen Blixen, a Danish baroness who falls in love with a hunter.

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'Out of Africa' - The film, starring Meryl Streep and Robert Redford, won Best Picture at the 1986 edition of the Academy Awards.

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'Amadeus' - 'Amadeus' is a biopic on Austrian composer Wolfgang Amadeus Mozart, as told by his contemporary rival, Antonio Salieri.

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'Amadeus' - Milos Forman's film won the Oscar for Best Picture in 1985.

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'Gandhi' - 'Gandhi' is a biographical account of Indian activist Mohandas K. Gandhi's life and his role in India's independence from the British.

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'Gandhi' - The film won Best Picture at the 1983 Oscars.

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'Patton' - 'Patton' tells the story of American general George S. Patton during WWII.

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'Patton' - The movie won the Oscar for Best Picture in 1971.

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'A Man for All Seasons' - 'A Man for All Seasons' centers around Thomas More, who stood by the Roman Catholic Church when King Henry VIII rejected it so he could get a divorce and remarry.

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'A Man for All Seasons' - The film, based on a Robert Bolt play, won Best Picture in 1967.

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'The Sound of Music' - 'The Sound of Music' tells the story of Maria von Trapp, a postulant at an Austrian convent who becomes governess to a widowed naval captain's seven children.

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'The Sound of Music' - The movie won Best Picture at the 1966 edition of the Academy Awards.

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'Lawrence of Arabia' - 'Lawrence of Arabia' tells the story of English officer T.E. Lawrence, who led Arab tribes in the fight against the Turks during WWI.

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'Lawrence of Arabia' - The film, starring Peter O'Toole, won Best Picture at the 1963 Oscars.

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'The Life of Emile Zola' - This movie is a biographical account of French writer Émile Zola and his involvement in exposing the truth about the Dreyfus Affair.

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'The Life of Emile Zola' - The film won the Oscar for Best Picture in 1938.

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'The Great Ziegfeld' - 'The Great Ziegfeld' tells the story of  theater producer Florenz Ziegfeld Jr.

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'The Great Ziegfeld' -

The movie won Best Picture at the 1937 edition of the Academy Awards.

See also: The most memorable Oscar moments of the past 20 years

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