Circle of Life

"These human beings... consider their potential. From the day they arrived on the planet and blinking stepped into the sun... there is more to see than can ever be seen. More to do than-- no, sorry. That's The Lion King."

--The Doctor , to the Sycorax Leader:

A song quoted by the Doctor (with some alterations), from The Lion King. (DW: The Christmas Invasion.)

:In the real world, Elton John, sings the original version of the song. The song title does not get a mention on-screen.