The David Tennant Treat 4 Today has been chosen by Lucy.
We have used this clip before as a David Tennant Treat 4 Today but it's a very popular one!
It's from Blackpool and is the clip of the policemen dancing.
Lucy's comment was "I wonder why they used this recording in the film. Did David dance the wrong way in every take? Or did they not notice that he's out of sync at that point?"