John Hurt The War Doctor; regenerated directley from the eighth Doctor as a warrior, destined to destroy Gallifrey. This act was apparently bad enough that the Eleventh Doctor does not consider him worthy of the name "Doctor".
Mysteroius shack and figure in the Impossible Astronaut.This figure is in several shots AS WELL AS the official picture for the episode! Let the theories commence! (there are plenty online if you search 'impossible astronaut shack figure')
All the Doctor Who companions: See amazing infographic as Karen Gillan quits as Amy Pond
"The way I see it, every life is a pile of good things and bad things. The good things don’t always soften the bad things, but vice versa, the bad things don’t always spoil the good things and make them unimportant.” The Doctor