In the disc of the original DVD release of Series 3 with "Blink" in it (disc 4) there is an Easter Egg on page 2 of scene selection of "Blink". It has the Doctor's Easter egg, unedited. To access it, you have to highlight "Blink" in the page and select it. Unlike other bonus scenes and deleted footage, the Easter egg remains "filmized" rather than being rendered on video, in keeping with it supposedly having been filmed in 1969.
Steven Moffat revealed that Carey Mulligan was offered the chance to stay on as a companion, but she declined.
This is the first Doctor Who TV story to be directed by a woman, after a 22-year interval. The previous one was The Mark of the Rani: Part One (1985)/The Mark of the Rani: Part Two (1985).
Steven Moffat claims that the Weeping Angels were inspired by the children's game 'Statues', which he found 'frightening'.
The Doctor and Martha were purposely not featured in this story so David Tennant and Freema Agyeman could concentrate on the final three stories Utopia (2007), The Sound of Drums (2007), and Last of the Time Lords (2007).