Casanova

In 1580 Venice, after the Eleventh Doctor realised that Casanova wouldn't be be born for another 145 years, the Doctor told Amy Pond and Rory Williams that he didn't want to run into Casanova, as he owed him a chicken in a bet. (TV: The Vampires of Venice)

Behind the scenes

 * David Tennant played Casanova in the written by Russell T Davies, directed by Sheree Folkson and exec produced by Davies and Julie Gardner. In The Christmas Invasion, the blue coat that Tennant wore as Casanova in the miniseries can be seen in the TARDIS wardrobe as the Tenth Doctor chooses his outfit.