Plot: Guests: Filmmaker Rob Reiner, DNC Chair Debbie Wasserman Schultz, Ex GOP Presidential Candidate Herman Cain, Daily Beast Blogger David Frum, Documentarian Alexandra Pelosi. Topics: Herman Cain's presidential campaign, attacks on Mitt Romney's 'vulture capitalism', US marines urinating on dead Taliban fighters, assassination of Iranian scientists, Romney's electability and the Republican primaries, Super PACs and campaign finance, holiday recap