Doctor Who is not only a key part of BBC1's Saturday night lineup in its own right - it has a presence on the current series of Strictly Come Dancing in the shape of one of the celebrity contestants.
Colin Salmon, whose professional dance partner for the series is Kristina Rihanoff, played Doctor Moon in the 2008 David Tennant episodes Silence in the Library and Forest of the Dead. Salmon is a familiar face on TV and film screens to millions, having also played Charles Robinson in three James Bond films from the Pierce Brosnan era.
So far on Strictly, Salmon's dances have included the cha-cha-cha, the Viennese waltz, the Argentine tango and the salsa. Follow his progress here.
Postscript 7 November: sadly, Colin was voted out of the competition at the weekend after a gallant effort.