The Impossible Astronaut - Exclusive Sneak Peek from the "Best of the Doctor" Special

Relive the shocking twists with the mysterious spaceman from the season six premiere, "The Impossible Astronaut" alongside celebrity Doctor Who fans like Chris Hardwick, Paul F. Tompkins and Scott Adsit in BBC America's original special "Best of the Doctor." Don't miss all-new episodes of Doctor Who on Saturdays at 9/8c!