From veteran film journalist Ian Haydn Smith, here are 100 illustrated profiles of documentaries with the power to change the way you think, explain alternative perspectives, enrage you over injustice, bring tears to your eyes, or put your heart in your mouth. From Asif Kapadia's poignant Amy to Ezra Edelman's probing O.J.: Made in America, James Marsh's breathtaking Man on Wire to Barbara Kopple's gritty Harlan County, USA, Smith delves into what makes these films great—many are Oscar winners or nominees—and how they were produced, as well as related documentary films.