An accomplished American filmmaker, he transitioned from a background in political science and technology to directing. Known for his incisive documentaries, his debut film, "No End in Sight," critically examined the Iraq War and earned an Academy Award nomination. He later won an Oscar for "Inside Job," a probing analysis of the 2008 financial crisis. His work is distinguished by meticulous research and compelling storytelling, often tackling complex socio-political issues with clarity and depth.