Continuity
The Santa robots make another appearance in "The Runaway Bride", this time under the control of the Empress of the Racnoss.
Harriet Jones appears again in the episode "The Stolen Earth" and identifies herself as the former prime minister. The running gag in this episode, where Jones identifies herself and people tell her they know who she is, is carried over to her next appearance.
The Doctor's severed hand would turn up in several subsequent episodes. In "Utopia", Captain Jack Harkness turns up with the hand, which he has been using to track the Doctor. In "The Sound of Drums"/"Last of the Time Lords", the Master uses the hand to genetically alter the Doctor. In "The Doctor's Daughter", the hand is shown in the TARDIS bubbling. In "The Stolen Earth"/Journey's End" the hand is imbued with regeneration energy and grows into the meta-crisis Doctor after being touched by Donna Noble.
Read more about this topic: The Christmas Invasion
Famous quotes containing the word continuity:
“The dialectic between change and continuity is a painful but deeply instructive one, in personal life as in the life of a people. To “see the light” too often has meant rejecting the treasures found in darkness.”
—Adrienne Rich (b. 1929)
“Every generation rewrites the past. In easy times history is more or less of an ornamental art, but in times of danger we are driven to the written record by a pressing need to find answers to the riddles of today.... In times of change and danger when there is a quicksand of fear under men’s reasoning, a sense of continuity with generations gone before can stretch like a lifeline across the scary present and get us past that idiot delusion of the exceptional Now that blocks good thinking.”
—John Dos Passos (1896–1970)
“There is never a beginning, there is never an end, to the inexplicable continuity of this web of God, but always circular power returning into itself.”
—Ralph Waldo Emerson (1803–1882)