'''WARNING! THERE MAY BE UNMARKED SPOILERS!'''

* In [[Recap/DoctorWhoS14E5TheRobotsOfDeath "The Robots of Death"]], "Grimwade's Syndrome", a fear of robots, was named after production assistant (later to be both director and writer) Peter Grimwade, who hated to do robot stories. The same story had a character named Poul, presumably after SpeculativeFiction writer PoulAnderson. Given the robot theme, Uvanov in the same story may have been a slightly subtler reference to Creator/IsaacAsimov, and Taren Capel to Karel Capek. In the novel ''Corpse Maker'', a sequel to "Robots of Death" by the same writer, Poul is given the first name Andor.
* [[Recap/DoctorWhoS29E2TheShakespeareCode "The Shakespeare Code"]]: New companion Martha remarks that the apparent witchcraft being done "all sounds a bit ''Literature/HarryPotter''", The Doctor enjoins her to wait till she reads the 7th book (which hadn't come out when the episode aired). Later, they and Shakespeare have to, on the fly, say the right words to banish the Carrionites:
-->'''Shakespeare:''' Banished like a tinker's cuss, I say to thee... (''looks to the Doctor'')\\
'''The Doctor:''' Uhh... (''looks to Martha'')\\
'''Martha:''' Expelliarmus!\\
'''The Doctor:''' Expelliarmus!\\
'''Shakespeare:''' Expelliarmus! (''it works'')\\
'''The Doctor:''' Good old J.K.!
** This also doubles as ActorAllusion since the Tenth Doctor, Creator/DavidTennant, played Barty Crouch Jr. in ''Film/HarryPotterAndTheGobletOfFire''.
* Some ''Series/CaptainScarletAndTheMysterons'' fans were quick to note that the ''Valiant'' looked a lot like Cloudbase. Or the ComicBook/{{SHIELD}} helicarrier from Creator/MarvelComics.
* [[Recap/DoctorWhoS24E4Dragonfire "Dragonfire"]]:
** In this 1988 serial , the Doctor and a philosophically minded guard debate the concept that "the semiotic thickness of a performed text varies according to the redundancy of its auxiliary performance codes." This is a direct quote from an academic media studies book entitled ''Doctor Who: The Unfolding Text'', and roughly translates into laymen's terms as "the less relevant an in-joke is to the plot, the more cultural significance it has."
** Almost every character in that story was named after someone famous to film history.
* [[Recap/DoctorWhoS29E8HumanNature "Human Nature"]]:
** The Doctor's human alter-ego gives his parents' names as Sydney and Verity. Creator/SydneyNewman was one of the original creators of the show, and Creator/VerityLambert was its first producer... they could very well be considered the "mother and father" of ''Doctor Who''! This is reprised in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]], the 2009 Christmas special, with [[spoiler:a cameo appearance by one of Joan Redfern's descendants, who has written a book based on John Smith's journal under the name "Verity Newman"]].
** Also, during the fast-forwarded part of the Doctor's instructions to Martha, David Tennant notes that he now has to [[Radio/JustAMinute talk for about a minute "without hesitation, deviation, or whatever the other thing is"]].
* [[Recap/DoctorWhoS30E9ForestOfTheDead "Forest of the Dead"]] has [[spoiler:Donna's two "children" called Josh and Ella. Josh is the name of Creator/StevenMoffat's son, with Ella being a friend of his]].
* The 2003 ''Series/DoctorWho'' webcast "Shada", based on a script by Douglas Adams, included a Nutrimat drinks machine and a Ford Prefect car (neither appearing in the original script), both references to ''Franchise/TheHitchhikersGuideToTheGalaxy''. The 2012 novelisation contains several more references, such as a reiteration of the famous digital watches joke, Chronotis switching out the book for "an Earth classic about space and thumbing lifts..." and a scene where the Doctor attempts to communicate with a man in ragged clothes and long hair whose first word is, for no apparent reason, "[[Series/MontyPythonsFlyingCircus It's...]]"
* [[Recap/DoctorWho2005CSTheChristmasInvasion "The Christmas Invasion"]]:
** A similar reference to ''Hitchhiker's'': "Not bad for a man in his jim-jams. Very Arthur Dent. Now, there was a nice man."
** In the same episode, the Doctor entreats the Sycorax to leave the humans alone. He makes a heartwarming speech about how from the day they arive on the planet, and blinking, step into the sun, there is more to be seen than can ever be seen... whereupon he remarks, "Wait, that's ''Disney/TheLionKing''."
* In [[Recap/DoctorWhoS28E3SchoolReunion "School Reunion"]], Anthony Head (who played Giles in ''Series/BuffyTheVampireSlayer''), in clear BuffySpeak, calls K9 (a robot dog with a laser canon) a "Shooty Dog-thing".
* Way back in [[Recap/DoctorWhoS26E2GhostLight "Ghost Light"]], the Doctor asked "Who was it who said Earthmen never invited their ancestors to dinner?"
* [[Recap/DoctorWhoS29E742 "42"]]:
** This 2007 episode plays out in real time, la ''Series/TwentyFour''.
** The title, of course, is another ''Hitchhiker's'' reference.
** It's also the number of minutes in a New Who episode, so the former is probably a bonus.
* [[Recap/DoctorWhoS30E7TheUnicornAndTheWasp "The Unicorn and the Wasp"]]: [[WesternAnimation/{{Futurama}} "I've gathered you all here in the Accusing Parlour..."]]
** To say nothing of the number of Creator/AgathaChristie titles dropped into the dialogue ("Well, that's put the ''Cat Among The Pigeons''", "It's a trick, an illusion, ''They Do It with Mirrors''", "''The Moving Finger'' points to...", "''Why Didn't They Ask - Heavens!''")
** WordOfGod is that the episode was inspired by the board game TabletopGame/{{Clue}} ("Cluedo" in the UK).
--->'''Professor Peach:''' (''in the library'') I say! What are your doing with that lead piping?
* [[Recap/DoctorWhoS28E12ArmyOfGhosts "Army of Ghosts"]] sees the Tenth Doctor donning a "triangulation kit" consisting of a power-pack and three TARDIS roundels; the finished getup resembles the Film/{{Ghostbusters}}' infamous Proton Pack. Cue a brief rendition of Ray Parker, Jr's classic theme tune.
* In [[Recap/DoctorWhoS30E3PlanetOfTheOod "Planet of the Ood"]] where the saleswoman talks about the Ood's voice modifications one of them says "Do'h" in a way that sounds like [[WesternAnimation/TheSimpsons Homer Simpson]].
* During [[Recap/DoctorWhoS31E2TheBeastBelow "The Beast Below"]], Amy runs around in her nightie and a dressing gown the whole time, a bit like a female version of [[Franchise/TheHitchhikersGuideToTheGalaxy Arthur Dent]]. Or a reference to Wendy from ''Literature/PeterPan''; a girl who runs off with the mysterious boy to another land in her nightgown the night before she has to "grow up".
* Of course, the Cybermen and Borg have obvious similarities, but they made it even more obvious when a Cyberman said [[Franchise/StarTrek "YOU WILL BE ASSIMILATED!"]] in the episode [[Recap/DoctorWhoS31E12ThePandoricaOpens "The Pandorica Opens"]].
* The sequence in [[Recap/DoctorWhoS31E4TheTimeOfAngels "The Time of Angels"]] with [[spoiler:the Weeping Angel slowly emerging from the television screen in is quite possibly a reference to ''Literature/TheRing''.]]
* The Doctor's OnlyMostlyDead quote in [[Recap/DoctorWhoS31E13TheBigBang "The Big Bang"]] is a clear homage to ''Film/ThePrincessBride''.
* In the special [[Recap/DoctorWhoS30E16TheWatersOfMars "The Waters of Mars"]], a character is infected by a single drop falling onto his eye. [[Film/TwentyEightDaysLater Remind you of anything?]]
* [[Recap/DoctorWhoS32E11TheGodComplex "The God Complex"]]:
** The Doctor explains the configuration of a prison, [[Film/{{Cube}} with multiple rooms changing shape and form and new threats to face each time]]. Then he flicks up a Rubik's cube and comments "Well that's just rude."
** Foreshadowing the hotel rooms, one character says [[Literature/NineteenEightyFour Here comes a candle to light you to bed; here comes a chopper to chop off your head]]. It's more likely an allusion to a traditional nursery rhyme, Oranges and Lemons, which predates ''Literature/NineteenEightyFour'' by quite a few years.
* [[Recap/DoctorWhoS27E9TheEmptyChild "The Empty Child"]] and [[Recap/DoctorWhoS27E10TheDoctorDances "The Doctor Dances"]] seem to contain a Shout Out to ''Theatre/TheImportanceOfBeingEarnest'' with Jack shagging Algy, since Jack and Algy (short for Algernon) are main characters in that play.
* WordOfGod has confirmed that the scenes of Amy and Rory running through the TARDIS [[spoiler:while it is possessed by House]] in [[Recap/DoctorWhoS32E4TheDoctorsWife "The Doctor's Wife"]] are a "very intentional" reference to Creator/HarlanEllison's "Literature/IHaveNomouthandimustscream". [[http://neil-gaiman.tumblr.com/post/25715283482/i-just-watched-your-lovely-doctor-who-episode-the]]
* [[Recap/DoctorWhoS33E1AsylumOfTheDaleks "Asylum of the Daleks"]] has a possible reference to ''Series/{{Coupling}}'' when Rory asks, "What colour?" because all the good questions were gone. Similarly, in "The Man with Two Legs", Patrick asks Jeff -- [[ItMakesSenseInContext who has fallen in love with a girl's leg]] -- "Left or right?" When Steve stares at him, he protests "It's a leg! What else is there to ask?" The others look shocked at him when he queries about the colour. It's possibly a reference to the backlash against the brightly coloured Paradigm Daleks in "Victory of the Daleks".
* The title of the ''Doctor Who'' Expanded Universe novel ''The Taking of Chelsea 426'' is a double reference: first (and most obviously) to the movie ''[[{{Film/TheTakingOfPelhamOneTwoThree}} The Taking of Pelham 123]]'', and second to the planet [[Film/{{Aliens}} LV-426]].
* ''Literature/EighthDoctorAdventures'' novel ''The Taking of Planet 5'' also homages ''Pelham 123''.
* The New Series Master feels like a Shout Out to Caligula in ''Series/IClaudius''. He has a constant sound of drums in his head like Caligula has a sound of galloping in his head. Also the aged Doctor seems similar to Claudius who is mocked by Caligula. Suitable as in [[Recap/DoctorWhoS29E13LastOfTheTimeLords "Last of the Time Lords"]] the Master is TheCaligula. If you watch the two characters you really feel the similarity between the Creator/JohnSimm Master and Caligula. John Simm had already played Caligula and claims he partially based his performance on this.
* [[Recap/DoctorWhoS33E7TheRingsOfAkhaten "The Rings of Akhaten"]]contains an array of new species. One of these seems to be a reference to {{Wrestling/CHIKARA}}, as not only are they called the Ultramanti (meaning the singular is Ultramantis), but there is a resemblence between them and one Wrestling/{{UltraMantis Black}}.
* In [[Recap/DoctorWhoS31E1TheEleventhHour "The Eleventh Hour"]], The Doctor's rejection of one food after another is reminiscent of the scene in ''[[Disney/TheManyAdventuresOfWinnieThePooh Winnie the Pooh]]'' in which Tigger says "Tiggers like honey/yuck, Tiggers don't like honey." It even sounds similar: "Oh, I love apples" -- *chomp* "Yech! I hate apples." It seems to fit the Doctor's personality as a bumbling, manic, impulsive genius.
* In [[Recap/DoctorWho50thASTheDayOfTheDoctor "The Day of the Doctor"]], as the Doctors enter the TARDIS to return to the present day from the 1500s, the 11th Doctor says "Right then, Film/BackToTheFuture."
* The climax of the next story (the Christmas Special), [[Recap/DoctorWho2013CSTheTimeOfTheDoctor "The Time of the Doctor"]], was also extremely reminiscent of the climax of ''Film/BackToTheFuture''.
* [[Recap/DoctorWhoS28E8TheImpossiblePlanet "The Impossible Planet"]]/[[Recap/DoctorWhoS28E9TheSatanPit "The Satan Pit"]] features a lot of use from the DoomDoors. Given that it involves [[VideoGame/{{Doom}} a gigantic demon possessing people and an archeology dig digging up said demon]], this is most likely intentional.
* [[Recap/DoctorWhoS33E12NightmareInSilver "Nightmare in Silver"]] has [[TabletopGame/{{Warhammer40000}} a galaxy spanning human empire, with an emperor that they revere as a god, who is engaged in a Robot War and destroys entire planets if it means stopping the enemy.]]
* [[Recap/DoctorWhoS34E1DeepBreath "Deep Breath"]]'s restaurant scene is similar to the ones in both ''Film/SherlockHolmes'' films: In Victorian London a highly intelligent, gorgeously-costumed girl meets an eccentric genius in a restaurant who proceeds to insult her (they make up later). Then, it turns out all the patrons were in on the bad guy's plot; they get up simultaneously and leave the girl to her fate (though Clara fares better than [[spoiler: Irene]]).
* [[Recap/DoctorWhoS34E2IntoTheDalek "Into The Dalek"]] features a dark Shout-Out to TheHitchhikersGuideToTheGalaxy when Clara suggests that Danny Pink "shoots people and then cries about it."
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