The Doctor and Clara are shown something that doesn't seem possible... #SaveTheDay A sneak peek from the Doctor Who 50th Anniversary special, The Day of the Doctor. Subscribe here for more exclusive Doctor Who clips and content http://www.youtube.com/subscription_center?add_user=doctorwho The Brand New Doctor Who Website - http://www.doctorwho.tv Doctor Who YouTube Channel http://www.youtube.com/user/doctorwho Doctor Who Facebook: https://www.facebook.com/DoctorWho Doctor Who Twitter https://twitter.com/bbcdoctorwho This is a channel from BBC Worldwide who help fund new BBC programmes.