Errol Morris (The Unknown Known), Lucy Walker (The Crash Reel), Alex Gibney (The Armstrong Lie, We Steal Secrets: The Story of Wikileaks), Morgan Neville (20 Feet From Stardom), Teller (Tim's Vermeer), James Toback (Seduced and Abandoned) join THR's film editor Gregg Kilday to discuss their award-worthy films.