Joshua Oppenheimer (born 1974) is an American-British film director, known for his experimental and impactful documentaries. His career is inextricably linked to the exploration of the consequences of the Indonesian genocide of 1965–66. He achieved international acclaim with *The Act of Killing* (2012), a radical work in which he invites the perpetrators of the massacres to re-enact their own crimes in cinematic style. The film received an Academy Award nomination for Best Documentary Feature and won a BAFTA Award. This was followed by the companion film *The Look of Silence* (2014), which adopts the perspective of a family of victims as they confront those responsible. This work was also nominated for an Academy Award and won the Grand Jury Prize at the Venice Film Festival. For his innovative approach and his investigation into memory and guilt, in 2014 Oppenheimer received the prestigious MacArthur Fellowship.