Documentary Roundtable: Roger Ebert's Final Days, Secret Edward Snowden Meetings

The directors of 'Citizenfour,' 'Life Itself,' 'Last Days in Vietnam,' 'Virunga,' 'The Case Against 8,' 'Tales of the Grim Sleeper' and 'Keep On Keepin' On' reveal why their very dramatic films have attracted the support Quincy  Jones, Leonardo DiCaprio and Steven Soderberghread more