David Hasselhoff
From Tardis Wiki, the free Doctor Who reference
David Hasselhoff was a singer who had performed at the falling of the Berlin Wall. The Doctor once remarked that he had gone twice to the event in order to avoid Hasselhoff's singing. (NSA: Autonomy)
- The Doctor's comments related to the real life song, "Looking for Freedom", which was a number one hit in Germany at the time of the fall of the Berlin Wall.