Cast of 'DOWNTON ABBEY': HUGH BONNEVILLE, ELIZABETH McGOVERN, JOANNE FROGGATT, ROB JAMES-COLLIER, SOPHIE McSHERA & JIM CARTER join Anderson to give viewers a sneak peek at the new season, and two superfans take part in a trivia challenge. (20 Dec 2012) Part 1: http://www.youtube.com/watch?v=4PoN_YoXaNo