And although there are some factual inaccuracies in there, and some liberties taken for dramatic effect (as with all docudramas), by and large I believe it presents a fairly accurate picture of the early development of the programme:
Directed by Terry McDonough. With David Bradley, Ross Gurney-Randall, Roger May, Sam Hoare. A dramatisation of the early years of Doctor Who (1963), with the story revolving around BBC executive Sydney Newman, novice producer Verity Lambert and actor William Hartnell.
Also definitely worth a watch is the extra "The Five(ish) Doctors", featuring Peter Davison, Colin Baker and Sylvester McCoy trying to get parts in the 50th Anniversary Special. Absolutely hilarious, along with a terrific scene with John Barrowman and a 'shocking' revelation (no spoilers!). Classic!