Mary Poppins
From Tardis Wiki, the free Doctor Who reference
Mary Poppins was something the Eleventh Doctor wondered — in the midst of a discussion about his fitness as a babysitter — if the twelve-and-a-half-year-old Kazran Sardick had seen. The Doctor stopped himself before fully comparing himself to Mary Poppins, saying that the analogy would have been "rubbish". (TV: A Christmas Carol)
When the Eleventh Doctor gathered magician props from the TARDIS, he placed them all in a large carpet bag which was bigger on the inside than the outside, saying he was glad he got it back from Mary Poppins. (PROSE: Magic of the Angels)
