The Doctor (Doctor Who)
The Doctor is the title character in the long-running BBC science fiction television programme "Doctor Who". Since the show's inception in 1963, the character has been portrayed by thirteen lead actors. In the programme, "the Doctor" is the alias assumed by a centuries-old alien—a Time Lord from the planet Gallifrey—who travels through space and time in the TARDIS, frequently with companions. The transition to each succeeding actor is explained within the show's narrative through the plot device of "regeneration", a biological function of the Time Lord race that allows a change of cellular structure and appearance with recovery following a potentially fatal injury.
Night and the Doctor
Night and the Doctor is a series of five made-for-DVD mini-episodes of "Doctor Who" which were written by Steven Moffat. They were released as bonus features in the "Complete Sixth Series" DVD and Blu-ray box sets in November 2011. of are. The first four are narrativey linked, centring on the question, "What does the Doctor do at night when his companions are asleep?" and take place in the console room of the TARDIS. The fifth one precedes the events of the episode "Closing Time", possibly a prequel or deleted scene, though this remains unconfirmed by the BBC. No cast or crew were credited for any of the five episodes except for writer Steven Moffat, who wrote the first four, but was erroneously credited with writing all five.