Jeremy Kleiner's career in entertainment began when he served as an intern on "Mr. Death: The Rise and Fall of Fred A. Leuchter, Jr." (1999). The documentary, directed by Errol Morris, was a portrait of the life and career of an execution-device engineer who was later revealed to be a notorious Holocaust denier. After the completion of the documentary, Kleiner began working with Plan B Entertainment, a film production company founded in 2002 by Brad Pitt, Brad Grey and Jennifer Aniston. After Pitt and Aniston's 2006 separation, Pitt became sole owner of the company. Plan B produced a number of highly successful films, with Kleiner working on Rebecca Miller's romantic comedy-drama "The Private Lives of Pippa Lee" (2009), the graphic novel-based action comedy "Kick Ass" (2010), the blockbuster Julia Roberts vehicle "Eat Pray Love" (2010) and the zombie thriller "World War Z" (2013). In 2013 Kleiner was made co-president, alongside existing president Dede Gardner, of Plan B Entertainment. In 2014 Kleiner, alongside fellow producer Brad Pitt, director Steve McQeen and Anthony Katagas won the Academy Award for Best Picture for "12 Years A Slave" (2013), the McQueen-helmed feature about a free black man who was abducted and sold into slavery prior to the Civil War. Kleiner and Plan B followed that triumph with Ava DuVernay's civil rights drama "Selma" (2014), Adam McKay's comedy-drama about the 2008 financial meltdown "The Big Short" (2015) and supernatural TV drama "The OA" (Netflix 2016). Kleiner won his second Best Picture Oscar as producer of Barry Jenkins' drama "Moonlight" (2016).