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!!Film
* ActorAllusion: Creator/YulBrynner wears the same outfit from ''Film/TheMagnificentSeven1960''.
* AwesomeDearBoy: Richard Benjamin apparently welcomed the role a lot, because he always wanted to star in a Western, but never had the opportunity until then.
* DeletedScene: There is a scene added for TV where a guest in Medieval World is tortured on the rack after the robots go haywire.
* RecycledINSPACE: 15 years later, Michael Crichton would write his most famous story, ''Literature/JurassicPark'', which is also about an amusement park where the attractions go crazy and attack the guests (only this time they were cloned dinosaurs, not robots).
* TechnologyMarchesOn:
** The sheer number of reel-to-reel computers running the resort are one obvious case.
** The spreading malfunction of the Delos robots is described in terms of an infection, which the heads of Delos laugh off. The film came out only two years after what is commonly described as the first computer virus, and almost a decade before the first time one infected anything outside of the lab where it was created.
** On top of that, in 1973, the Gunslinger's POVCam sequences were ''the most advanced special effect in recorded history'', the first use of digital image processing in a feature.
* UnintentionalPeriodPiece: One scene that will immediately stand out to any modern viewer is the bit where the park's technicians are trying to figure out and explain what's causing the robots to start attacking guests, particularly the fact that it seems to be spreading between the robots. Today, we have a very simple term for this "infectious machine disease": ''computer virus''.
* WhatCouldHaveBeen: Creator/QuentinTarantino was offered the chance to helm a remake of the film in the early 2000s but declined, and the film eventually got lost in DevelopmentHell.


!!Series
* ActingInTheDark:
** [[spoiler:Jeffrey Wright]] was one of the few actors who knew [[spoiler:Bernard]] is a host, and even he was only told after the pilot was filmed, to allow him to put some subtle quirks in his body language.
** Defied by [[http://www.ew.com/article/2016/12/05/westworld-anthony-hopkins-finale Anthony Hopkins]], who specifically demanded to be given the full picture as a condition after he was initially sent scripts with a lot of blacked out lines.
* ActingForTwo: [[spoiler:Jeffrey Wright plays Bernard Lowe and Arnold Weber (the man whose likeness that Bernard's is based on).]]
* AllStarCast: Two decades-long Hollywood A-listers like Antony Hopkins and Ed Harris are surrounded by plenty of other household names such as James Mardsen, Evan Rachel Wood, Thandie Newton, Jeffrey Wright and Luke Hemsworth.
* TheCameo: The photo [[spoiler: which turns out to be of Logan's sister and William's fiancee Juliet]] which drives Peter Abernathy to his decommissioning is just [[http://comicbook.com/popculturenow/2016/12/04/westworld-williams-wife-has-been-found/ a mirrored stock photo]] of ''Series/AmericasNextTopModel'' contestant Claire Unabia, [[spoiler: who has a physical cameo in the same role in the second episode of the second season]].
* CastingGag:
** In the park's storylines, Teddy is "the one to lose" to make winning Dolores have more meaning. His actor Creator/JamesMarsden is known for playing the RomanticFalseLead in various works; his characters also [[ChronicallyKilledActor tend to die a lot]], as it turns out.
** Shannon Woodward was a regular guest on ''Podcast/TheThrillingAdventureHour'', most often as recurring character The Widow Johnson in "Sparks Nevada: Marshal on Mars". This segment of the show, set on Mars in the future, is both intimately acquainted with sci-fi cowboys and artificial intelligence...
** Steven Ogg's Rebus is a deranged psychopath who is also intended to act as an EvilMentor to more crime-inclined guests. Just like [[VideoGame/GrandTheftAutoV Trevor.]]
* TheCharacterDiedWithHim: Indicated to be so with Kissy, since Eddie Rouse [[http://www.greensboro.com/go_triad/film_tv/tv-tidbits-westworld-premiere-includes-final-performance-by-eddie-rouse/article_b3adb137-79e2-5a9c-a490-9480a2ff898e.html passed away in December 2014]], a few months after filming the pilot. A dedication to him appears in the pilot episode's end credits.
* DoingItForTheArt: Much like the movies by [[Creator/ChristopherNolan Christopher]] and Creator/JonathanNolan, the show is shot on 35mm filmstock, making it one of the few which still do so. Plus, the show uses a lot of Main/PracticalEffects for several key sequences, with CGI being used only to embellish certain things which aren't physically possible.
* ExactWords: When [[http://screenrant.com/westworld-samurai-world/ asked about the subject]] when the show first premiered, Jonathan Nolan said that Roman World and Medieval World would not be appearing on the show. [[spoiler:Since he was never asked anything about any ''other'' theme parks, he and Lisa Joy must have seen that as a chance to reveal in the season one finale that Delos also operates what seems to be a JidaiGeki-themed park, which fans have taken to calling "Samuraiworld".]]
* FakeAmerican: Australians Luke Hemsworth (Stubbs) and Leonardo Nam (Felix), the Dutch Katja Herbers ('Grace'), & the British Ben Barnes (Logan).
** Ben Barnes maybe a subversion, as Season 2 introduces the character of his father, [[spoiler:James Delos]], who is played by [[spoiler:Scottish actor Creator/PeterMullan]], who retains his natural accent. Which is cause to assume that Logan is British, but has an American accent because he probably grew up in the States.
* FakeNationality: Armistice is played by Norwegian actress Ingrid Bolsø Berdal.
* FanNickname: Several, but especially [[spoiler:"Bernarnold"]] for Jeffrey Wright's character and various iterations of "Dolores" (Delores, Dorito, etc.) since [[SpellMyNameWithAnS no one seems to know how to spell her name correctly]].
* IKnewIt:
** Many people guessed that [[spoiler:Bernard was a host]] before it actually was revealed in the seventh episode.
** Likewise, many people figured out that [[spoiler:the show's narrative is set between two time periods]] before it was revealed in the ninth episode. Related to this, many people also guessed that [[spoiler:William is the past version of the Man in Black]], which is strongly implied by the end of the episode and confirmed in the season one finale.
** A lot of people figured out that Grace, the female guest who first appeared in The Raj from "Virtu e Fortuna" is [[spoiler:Emily, William's daughter]] which is confirmed in the next episode.
* NamesTheSame: Elsie Hughes. Elsie is the seldom-used first name of Mrs. Hughes in ''Series/DowntonAbbey''.
* TheOtherMarty: Creator/MirandaOtto was first cast to play Theresa, but dropped out during the first season's TroubledProduction.
* ProductionPosse: Several of the crew members are people who've worked with the Nolan brothers on their former projects.
** From ''Series/PersonOfInterest'': directors Richard J. Lewis, Fred Toye, and Stephen Williams; actors Jimmi Simpson, Robert Mukes, Steven Ogg, Jonathan Tucker, and Neil Jackson (latter two in the second season); writer Dan Dietz, composer Ramin Djawadi, editor Stephen Semel, cinematographer Teodoro Maniaci, and visual effects supervisor Jay Worth (as well as VFX studios Co SA & ILP).
** From ''Film/ThePrestige'', ''Film/{{Interstellar}}'', ''Film/{{Inception}}'', and ''Franchise/TheDarkKnightTrilogy'': production designer Nathan Crowley, set decorator Julie Ochipinti, casting director John Papsidera, actors Lena Georgas, Wade Williams, Talulah Riley & Fredric Lehne, and VFX studio Double Negative.
* RealitySubtext: Most of Evan Rachel Wood's career before this show was spent in DamselInDistress roles. She's said that playing someone programmed as yet another of those only to send her story OffTheRails to become an ActionGirl was very cathartic, and added a good deal to her performance as she actually felt like she was fighting her instincts.
* ScheduleSlip: Shortly after the first season ended, the producers admitted that given their busy film careers, we wouldn't be seeing Season 2 until at least two years later. They also confirmed that the upcoming Season 3 [[http://collider.com/westworld-season-3/ may be released until 2020]] as they need more time to develop and also to let HBO focus on the final season of their flagship show, ''Series/GameOfThrones'', in 2019. This ended up being subverted, when season 2 premiered in the first half of 2018.
* SpiritualSuccessor:
** To ''Series/PersonOfInterest'', Jonathan Nolan's previous series. Before ''Westworld'' even started, he admitted that the two series basically look at the same question (what if AI became truly intelligent?) but from vastly different points of view, with ''Westworld'' having the AIs be anthropomorphized while the AIs in POI were always mainframe-based.
** Alternately, it can also be seen as a spiritual "interquel" to ''{{Series/Dollhouse}}''. Both shows examine the use of advanced technology to exploit "lesser" individuals (robots in one, mind-wiped humans in the other) for the entertainment of the wealthy elite. It even extends to an attempt to grant the rich and powerful a form of immortality using this tech, only for the indentured subjects to rise up and buck their programming, leading to an apocalyptic nightmare world. Dolores and Echo parallel each other in their "special" ability to draw upon multiple backstories, and are the leaders of their respective rebellions. Pretend the hosts are actually dolls, and the Delos uprising could easily slotted in between the main timeline of that show and its "Epitaph" finales.
** There are many elements and themes drawn not only from the original film, but also Čapek's nearly century old play ''[[Theatre/{{RUR}} Rossum's Universal Robots]]'' (and the works it influenced). There's enough of these references to make the series a SpiritualAdaptation of the play. In R.U.R., the robots are manufactured on assembly lines, but are otherwise organic, the biochemistry of their tissues consisting of artificially derived organic compounds. The series' depiction of host-manufacturing, via synthetic analogues close to real organic tissues, aseembled on loom-like futuristic 3D printers, is probably the closest visualisation of what Čapek could only loosely describe in the 1920s. In this sense, it's almost LifeImitatesArt (though we're still nowhere near building artificial organisms that convincing). Initially, R.U.R.'s robots couldn't feel pain and kept hurting themselves at work by sheer ignorance, in a bit of a parallel to the hosts glitching out or wilfully ignoring things at odds with their programming. There are also some similarities between the series' characters and those of the play. James Delos is in some respects similar to his corporate counterpart Harry Domin, a self-assured man who doesn't fully understand the ramifications of what he's investing in. Dr. Ford himself has plenty of parallels to professor Rossum himself, including his apparent misanthropy and cynicism, but Ford's MadScientist public image is more about him playing things up, rather than actual fact. Arnold, Ford's more meek and less cynical friend, and more host-caring former colleague, has several similarities to the other scientists from the play. He has an element of Rossum's "reclusive MadScientist" backstory too. When using her Wyatt-based persona, [[GenderFlip Dolores]] has parallels to RUR's [[TurnedAgainstTheirMasters robot revolt]] leader Radius. Otherwise, she also resembles the human character Helena Glory, an activist for robot rights early in the play. And if some of the implications about the six parks' location are true, [[spoiler:the parks might be situated on an isolated island... just like the RUR headquarters and production facilities were.]]
* TimeShiftedActor: [[spoiler:Jimmi Simpson plays the younger version of Ed Harris's character.]]
* TrollingCreator: Nolan and Joy have admitted "We love to fuck with Reddit." And proved it when they announced they'd be spoiling an entire plot line for Season 2 so that anyone who wanted could search out trolls trying to spoil the show. Then the video was Evan Rachel Wood performing [[Music/RickAstley "Never Gonna Give You Up."]]
* ViralMarketing: HBO put up two InUniverse sites ([[https://www.discoverwestworld.com Discover Westworld]] and [[https://www.delosincorporated.com the official site]] of the Delos Corporation) to promote the show. A lot of hidden messages and glitchy videos are hidden in the sites usually to foreshadow the upcoming episodes.
* WhatCouldHaveBeen:
** Creator/EionBailey was originally cast as Logan but had to drop out, and was replaced with Ben Barnes.
** Actress Creator/MirandaOtto had to leave after filming the pilot due to commitments to ''{{Series/Homeland}}'', and so she was replaced by and her scenes refilmed with Sidse Babett Knudsen.
** Creator/GeorgeRRMartin is a big fan of the series - to the point where he [[http://www.vanityfair.com/hollywood/2016/10/westworld-game-of-thrones-crossover-george-rr-martin offered]] the producers a ''{{crossover}}'', with Westeros acting as the original film's "Medieval World", filled with ''Series/GameOfThrones'' cameos. Amusingly, the producers' explanation for why they didn't take him up on it is adorably respectful; they didn't want to imply that ''Literature/ASongOfIceAndFire'' was just a theme park.
-->'''Jonathan Nolan''': We love George. Heís a lovely guy and a stunning writer, and itís flattering he would encourage a crossover. We should be so lucky.\\
'''Lisa Joy''': I need to be believe that dragons are real. I want them be a real thing. So as much as I love George, I canít lose that for myself!
** According to Nolan, there was a long arc envisioned involving Kissy, but it was scrapped when Rouse died after filming the pilot.
** Per the [[http://www.empireonline.com/movies/features/westworld-exclusive-inside-look-season-two-preview/ showrunners]], while initially planning out the series, [[spoiler: Ford was supposed to die ''at the end of the pilot''. Once they started outlining the episode, they realized the magnitude of the character, and decided to keep him on longer, before killing him in the first season finale. Not exactly a case of Dead Star Walking, as Anthony Hopkins hadn't been cast in the role at the time.]]
* WordOfGod:
** Jonathan Nolan has stated that Romanworld and Medievalworld will not be appearing in the series. [[spoiler:He never said anything about Samuraiworld, though.]]
** Several months after the first season ended, the producers saw numerous people had been theorizing that [[spoiler:Maeve staying in the park was just her programming kicking back in, and specified that it was her own choice to find her daughter.]]
** The official name for the Colonial India park is The Raj, which was changed from Rajworld when someone on Reddit got a little too close to discovering it while searching for spoilers.
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