Part of complete coverage on
 

A history of Oscar-winning best pictures

Benedict Cumberbatch, left, and Chiwetel Ejiofor appear in "12 Years a Slave," which won the Oscar for best picture in 2013. For more than 80 years, the Academy of Motion Picture Arts and Sciences has been designating one film the best motion picture of the year. Some of the winners have become classics, while others have been forgotten by all but trivia diehards.

Benedict Cumberbatch, left, and Chiwetel Ejiofor appear in "12 Years a Slave," which won the Oscar for best picture in 2013. For more than 80 years, the Academy of Motion Picture Arts and Sciences has been designating one film the best motion picture of the year. Some of the winners have become classics, while others have been forgotten by all but trivia diehards.