The official Doctor Who Tumblr just reached 100,000 fans!! <br ... The official Doctor Who Tumblr just reached 100,000 fans!!

Posted by: BBCAmericaTV

Video duration: 23 seconds

The official Doctor Who Tumblr just reached 100,000 fans!!
The Doctor himself, MATT SMITH, joins in the celebration - and throws down a new challenge to the fans!
Join the best community across all of Time & Space today!
http://DoctorWho. tumblr.com