This document discusses key concepts in documentary filmmaking such as accuracy, balance, impartiality, objectivity, subjectivity, bias, and representation. It provides three examples of controversial documentaries: "Super Size Me" which examines the health effects of a fast food diet and is shown to be biased, "Who Killed the Electric Car?" which investigates electric vehicles and their lack of adoption and is opinionated, and "Trouble the Water" which uses survivor interviews to accurately portray Hurricane Katrina.