#20 Stolen Thunder
The BBC played a practical joke on itself that became one of the show’s most enduring scandals, and not because of anything about the script or the cast. An animated commercial for another BBC show played during the airing of The Time of the Angels, just before the episode’s dramatic cliffhanger ending.
At the bottom of the screen, during the Doctor’s monologue, a commercial for Graham Norton’s Over The Rainbow appeared. The BBC received numerous complaints from dissatisfied viewers, prompting a public apology.