Paul Mariano and Kurt Norton's THESE AMAZING SHADOWS asks the question: what do films like Casablanca, Blazing Saddles and West Side Story have in common? As the government-appointed protector of our cinematic legacy, the National Film Registry selects culturally, historically, or aesthetically significant works for preservation in the Library of Congress. From award-winning features to music videos, experimental films to home movies, each Registry selection reflects a truth of its time or a standout artistic vision. Through interviews with Registry board members, archivists, and notable filmmakers like Christopher Nolan, Rob Reiner, John Waters, John Singleton, John Lasseter and Barbara Kopple, the filmmakers demonstrate the way film documents artistic and societal milestones.