When the Eighth Doctor told the dark-haired version of Sam Jones about the blonde version of her who travelled with him, she thought it was a practical joke like in It's a Wonderful Life. She said her mum cried through it every time it was on television. (PROSE: Unnatural History)
The Tenth Doctor was looking for his copy of the film when he accidentally released the Wire. After recapturing the Wire with the help of Alice Wu on Christmas Day, the Doctor joined Alice and her family as they sat down to watch the film. (PROSE: Loose Wire)
Behind the scenes Edit
The characters in Flip-Flop are named after characters and actors in It's a Wonderful Life.