The Next Doctor quite like "The Next Doctor"." The book also contained two pictures from a scene cut from the end of the previous episode, intended to segue into the special echoing the previous two series. This scene was included on the series boxset. Following the success of last year's Christmas special, "Voyage of the Damned", which guest starred pop star Kylie Minogue as one-off companion Astrid Peth, Russell T Davies had initially felt tempted to copy this format with another high-profile guest star, but decided against it after jokingly offering up "Cheryl Cole on board the "Hindenburg"" as an example. Regarding an
A Christmas Carol (Doctor Who) Writer Steven Moffat, who is also head writer and executive producer of the series, wanted to make the special "really Christmassy" because the previous Christmas special, "The End of Time", had been darker than usual as it led to the Tenth Doctor's (David Tennant) regeneration. He stated that he had "never been so excited about writing anything. I was laughing madly as I typed along to Christmas songs in April". Moffat stated that "A Christmas Carol" was "probably [his] favourite Christmas story" and that it lent itself to "Doctor Who", as there was an aspect similar to time travel in