* AbilityOverAppearance:
** Producers were reluctant to cast Amber Benson as Tara in ''Series/BuffyTheVampireSlayer'' because she was too voluptuous for the supposedly plain girl but she won them over with her awkwardness.
** Alyson Hannigan's casting went something like this too. Joss stated that all the other girls who auditioned for Willow wore NerdGlasses and acted stereotypically [[HollywoodNerd nerdy]]. While Alyson won the part based on the fact that she didn't do that.
* ActorAllusion: Giles piping in "Dance Macabre" during his slideshow presentation in "Hush". Anthony Stewart Head appeared in the pilot of ''Series/JonathanCreek'', which used this song as its theme.
* ActorSharedBackground:
** Marsters based his accent on Anthony Stewart Head's. Giles uses an RP English accent on-camera, but his actor sounds like a working-class "tough guy" in real life, using an accent close to Estuary English. He uses it for Giles' adolescent persona in "Band Candy."
** In "Nightmares", Buffy's personal nightmare is being buried alive by the Master. Sarah Michelle Gellar is terrified of graveyards for this same reason, which is amusing seeing as her character was buried alive ''twice'' in the show ("Nightmares" and "Bargaining Pt. 1"), and [[IronicFear spends most of her evenings in graveyards]].
** Alyson Hannigan maintains that she [[PerformanceAnxiety cannot sing or dance]] (which hasn't stopped multiple writers from shoehorning her into [[Series/HowIMetYourMother splashy musical numbers]], but oh well), mirroring Willow's nightmare of being forced to sing ''MadameButterfly''. ("Nightmares")
** Baby Buffy went through a phase during which she idolized ice skater Dorothy Hamill. Sarah Michelle Gellar enjoys figure skating in real life, a skill which was put to good use in "What's My Line Pt 1".
** The scene in "[[Recap/BuffyTheVampireSlayerS3E8LoversWalk Lover's Walk]]" where Cordelia gets impaled is based on a real incident. At five years old, playing around a swimming pool that was still under construction, Creator/CharismaCarpenter fell onto a piece of rebar. Only in real life she fell off a horse and not through stairs.
* BreakthroughHit: For Creator/JossWhedon.
* CreatorsFavorite: Xander (who was a stand in for Joss,) Dawn (with Michelle Thantenberg being such a big fan of the series focus was given to her,) and Kennedy (Whedon really liked the character and gave a lot of focus to her) being standouts.
* TheDanza: Larry Bagby III as Larry Blaisdell. DB Woodside as Robin Wood.
* DawsonCasting: Some actors were a full decade older than their characters.
** Averted by Dawn and Faith, who are both the same age as the actresses playing them (ElizaDushku was even legally emancipated from her parents so she wouldn't be limited by child labor laws).
* FakeBrit:
** Spike, played by American JamesMarsters.
** Wesley, played by Seattle native Alexis Denisof
* FakeIrish: Boreanaz's accent leaves much to be desired.
* HeAlsoDid: Nicholas Brendon (the guy who played Xander) [[http://verybadkoalas.com/2010/09/29/episode-1/ has a webcomic]].
* HeyItsThatGuy:
** [[Series/StarTrekDeepSpaceNine Quark]] moved to Sunnydale![[note]]Armin Shimerman actually played both roles between 1997-99[[/note]]
** Robia [=LaMorte=] (Jenny Calendar) was “Pearl” of {{Prince}}’s backup dancers Diamond and Pearl.
** Anya was Jason Priestly's love interest on ''BeverlyHills90210''.
** Buffy's dad is [[Series/LittleHouseOnThePrairie Almanzo Wilder]].
** Melanie [=MacQueen=] plays the creepy mother of the Epps boys ("Some Assembly Required"). She's best known as snarky "[[FairyGodmother Lady Luck]]" from the [[http://www.youtube.com/watch?v=cbCLvqoZno4 Virginia Lotto commercials]].
** The Master wants to know if [[AnimalHouse that's a PLEDGE PIN on your UNIFORM!]]
** [[{{Series/CSINY}} Danny Messer]] was vampire food in the pilot.
** Surprising that Buffy didn't think of Wood as much of a BaldBlackLeaderGuy. [[Series/TwentyFour His brother was a much adored US president and he would later take the role himself.]] Aaron Pierce was suspected as being Cassie's abusive father.
* HeyItsThatPlace: The external (and some internal) shots of Sunnydale High School are of Torrance High, the same school used for the ''BeverlyHills90210''
** The exterior of Angel's mansion is of Frank Lloyd Wright's Ennis House, a popular shooting location.
** Buffy's old school, Hemery High, is the clock tower made famous in ''Film/BackToTheFuture''.
** "Fear Itself" took place in what would become better known as the Murder House house in the first season of AmericanHorrorStory
** The battle between the Slayers and Kakistos ("Faith, Hope, and Trick") takes place inside L.A. Firestation 23, also used as HQ for the ''Film/{{Ghostbusters}}.''
* HeyItsThatVoice: In the Japanese dub:
** [[Creator/YukoMizutani Buffy]] is [[VideoGame/SuperRobotWarsOriginalGeneration Excellen Browning]] and [[Anime/TenchiMuyo Mihoshi]].
** [[Creator/KenyuHoriuchi Angel]] is [[Franchise/MetalGear Raiden]] and [[Anime/MobileSuitGundamZZ Mashmyre Cello]].
** [[Creator/NozomuSasaki Oz]] is [[Manga/{{Akira}} Tetsuo Shima]], [[VideoGame/TheKingOfFighters K9999]] and [[Anime/AfterWarGundamX Olba Frost]].
** [[Creator/YukoKaida Tara]] is [[Anime/QueensBlade Risty]] and [[Anime/MobileSuitGundamUnicorn Marida Cruz]].
** [[Creator/{{Mugihito}} The Master]] is [[Anime/NeonGenesisEvangelion Keel Lorentz]].
* NamesTheSame:
** Everyone knows Cordelia. Cheerleader. AlphaBitch. Rival of Buffy. Hopeless with rifles. There's also [[LollipopChainsaw Cordelia.]] Her little sister is a cheerleader. {{Tomboy}}. Very much an ally. Wields a sniper rifle.
** Definitely a coincidence, but still funny: in the comic ComicBook/{{WITCH}}, there's a redheaded MagicalGirlWarrior called ''Will'' who has a bit of LesYay with a shy MagicalGirlWarrior called Tara''nee''. The same comic also features a LovableAlphaBitch called Cor''n''elia.
* NamesToRunAwayFromReallyFast: Real life example: Robia [=LaMorte=]'s (miss Calendar) surname means "(the) death" in Italian and "the dead woman" in French.
* TheOtherDarrin: Nikki Wood, the second slayer Spike kills, is played by a stuntwoman in "Fool For Love." When The First assumes her shape in Season 7, she was recast as a more vulnerable-looking actress.
** Buffy's old mentor Merrick looks different in a season 2 flashback.
* TheOtherMarty: Riff Regan played Willow in the unaired Proof of Concept to sell the show but never intended to play her in the series.
* PromotedFangirl:
** Michelle Trachtenberg was a huge fan of ''Buffy'' before being signed onto the show, and once told Joss "There was never a Buffy episode that sucked. I love you!"
** When "[[Recap/BuffyTheVampireSlayerS3E8LoversWalk Lover's Walk]] episode originally aired in the US, it was followed by an advert for the phone service 1800-COLLECT, in which Sarah Michelle Gellar and David Boreanaz offered a prize of a walk-on part in "[[Recap/BuffyTheVampireSlayerS3E20TheProm The Prom]]."
* RetroactiveRecognition:
** A young Sarah Michelle Gellar seeks help solving the mystery of [[http://www.youtube.com/watch?v=C8u8xvzDEpk why her cookies are so delicious]], with professional dick Seth Green on the case. This actually happened.
** AmyAdams appears as Tara's bitchy cousin Beth.
** [[{{CSI NY}} Danny Messer]] being bitten by Darla in the pilot.
** In "Reptile Boy", Machida, underneath the scales, is actually [[Series/BabylonFive Byron]].
** In the same episode, Delta Zetta Kappa's newest inductee is [[Series/BurnNotice Jesse Porter]].
** One of the members of the school swim team in "Go Fish" is [[PrisonBreak Michael Scofield]].
** Saverio Guerra, who played Willy the Snitch, is best known as Bob from ''{{Becker}}''.
** Billy Fordham from "Lie to Me". {{Roswell}} fans know him as Max, but seven years later, Jason Behr & SMG would be reunited for ''TheGrudge''.
** Scott Hope is played by Fab Fillipo, who went on to star in ''QueerAsFolk''. It should as no surprise, then, that Scott [[RealitySubtext came out of the closet]] in passing.
** [[AustinPowers Scott Evil]] flies the ''[[Franchise/MassEffect Normandy]]'' (and Lance from "Him" shares a voice with Garrus Vakarian).
** Gwendolyn Post is [[Film/TheWorldIsNotEnough Dr. Molly Warmflash]].
** NathanFillion was fresh from ''Series/{{Firefly}}''. Whatever fan glee existed surrounding his arrival was crushed after Caleb's true colors were revealed five minutes in. People watching the show for the first time now, will likely recognise him as ''Series/{{Castle}}''.
** Cordette #1 (the girl who is drained by The Master's blood machine in "The Wish"), Nicole Bilderback, played opposite Creator/SethGreen in the 1998 movie ''CantHardlyWait''. She also appeared in ''BringItOn'' with Clare Kramer (Glory) and ElizaDushku.
** Creator/KalPenn, more well known as [[Film/HaroldAndKumarGoToWhiteCastle Kumar]] and [[{{House}} Kutner]] shows up as a random college student in "Beer Bad".
** By this point, D.B. Woodside, who played Robin Wood in the final season, is likely far more recognizable as Wayne Palmer from ''Series/TwentyFour'' (Woodside actually joined the cast of the series in Fall 2003, the following television season after Buffy's finale)
** George the Janitor from "I Only Have Eyes for You" was played by none other than [[WintersBone John]] [[{{Series/Deadwood}} Hawkes]].
** James from the same episode played by Christopher Gorham aka Henry from UglyBetty
** RobinAtkinDownes as the Snake King Machida in "Reptile Boy".
* RomanceOnTheSet:
** Here's an odd one: Amber Benson and Adam Busch... known as Tara and Warren respectively.
** AlysonHannigan (Willow) is married to Alexis Denisof (Wesley).
* ThrowItIn: The famous Mutant Enemy title card was reportedly scribbled by Whedon with only seconds to go until broadcast.
** It has several variants through the series.
*** Graduation Day: Wearing a graduation hat
*** Amends: Wearing a Santa hat
*** Becoming 2: Says "I need a hug"
*** Hush: Silent
*** Once More With Feeling: Sings the "grr, argh" line in falsetto
*** Storytellers: Sings "We are gods!"
*** Chosen: Looking right at the viewer
** In "[[Recap/BuffyTheVampireSlayerS2E14Innocence Innocence]]," The scene where Angel dumps Buffy in his apartment was originally supposed to take place on Buffy's lawn. Halfway through shooting the scene, SMG and David Boreanaz told Joss that the scene wasn't working, so he moved it to the bedroom. Buffy can still heard saying she saw him "at the house". She was so LostInCharacter afterwards they had to close down the set for half an hour, being that invested in the romance.
** The gag in "[[Recap/BuffyTheVampireSlayerS3E19Earshot Earshot]]" with Giles walking into a tree was ad-libbed by AnthonyStewartHead. He never dreamed Joss would keep in the cut.
** In the [[Recap/BuffyTheVampireSlayerS3E22GraduationDayPart2 Season Three finale]], Cordelia [[SecurityCling cowers behind]] the diminutive Jonathan. According to Danny Strong, this scene was an idea of Charisma's, because she was leaving for ''Angel'' and never got much screen time with him.
* TropeNamer: For...
** BigBad: And, by extension, its {{snowclones}}:
*** BigBadDuumvirate: The Trio.
*** BigBadEnsemble
*** BigBadWannabe: Poor Spike fits the bill. And he's the trope namer for "Big Bad", too! Life is so unfair.
*** BigGood: This being a Whedon show, though, even the Big Goods (Quentin Travers, Sineya, the Shadow Men) [[KnightTemplar aren't very good]].
*** BiggerBad: The [[ExactlyWhatItSaysOnTheTin First Evil]].
** BreakawayPopHit[[invoked]]: "Once More With Feeling"
** BuffySpeak
** ButtMonkey: Xander used it to refer to himself in "Buffy vs. Dracula."
** CameBackWrong: "Smashed"
** CameBackStrong: "Prophecy Girl"
** FunnyAneurysmMoment: "The Freshman" (InUniverse version)[[invoked]]
** GameFace: "Prophecy Girl"
** InferioritySuperiorityComplex: Holden Webster's expert opinion on Buffy. ("Conversations with Dead People")
** InsaneTrollLogic: "Triangle"
** UseYourHead: Spike's [[BadBoss helpful suggestion]] to one of his mooks ("[[Recap/BuffyTheVampireSlayerS2E3SchoolHard School Hard]]")
* And the ''[[Administrivia/RenamedTropes former]]'' Trope Namer for:
** BadassDecay: Formerly known as Spikeification.[[invoked]]
** ChekhovsBoomerang: Formerly known as Olaf's Hammer.
** FangThpeak: Formerly known as WhedonThyndrome.
** WeirdnessCensor: Formerly known as SunnydaleSyndrome.
* WhatCouldHaveBeen: Whedon wanted to put Eric Balfour [[DeadStarWalking in the opening credits]] for the first two episodes so that his death would be a surprise, but literally didn't have the money for two sets of credits. [[spoiler:He got to do it with Tara six years later]].
** Darla was originally supposed to be killed in the end of "The Harvest" when Willow hurled holy water at her, but a more interesting plot for episode seven ("Angel") was needed so they kept her in the show.
** JamesMarsters originally auditioned for the role of Spike using a [[CorruptHick Texan accent]] for the character. He and the writers eventually decided that this was not a good fit, and so instead of a cowboy, Spike became a limey.
** Spike actually uses this Texan accent in Season #4 when he's attempting to convince people that he's an old friend of Xander's. It's hilarious.
** "Normal Again" was originally more of a RageAgainstTheAuthor episode, with the world of Sunnydale crumbling due to Joss Whedon suffering writers block.
** Bianca Lawson (Kendra) originally auditioned for the role of Cordelia Chase and won it, but she was opted to take a role in the sitcom ''Goode Behavior'' instead. Producers liked her so much that she was introduced on the second season as Kendra.
** Buffy's bazooka in "Innocence" was originally a tank in the script.
** Oz was originally supposed to be killed by Angelus in "Passion", but his character had a lot of potential, so the decision was made to bump off [[spoiler:Jenny]] instead. [[spoiler:Jenny Calendar]] was supposed to have died in an earlier episode, "Innocence", presumably in place of Uncle Enyos.
** Warren was only intended to be a lackey on par with Jonathan during Season 6, working under Tucker Wells (from the episode "The Prom"), who would have been the real villain of the season. However, actor Brad Kane was unavailable to reprise the role, so Andrew Wells was created to be Tucker's brother as a substitute. Warren was likely promoted to main villain because he ended up being the most unpleasant of the three — Andrew was an amusing Ineffectual Sympathetic Villain, and Jonathan was generally well-liked by the audience by that point.
** Creator/AmberBenson was slated to return in season seven. However she knows just how cruel JossWhedon would be to her characters and to the fans, [[GenreSavvy and declined the role.]] There is, in fact, a script for "Conversations with Dead People" that has Tara in place of Cassie talking to Willow, and it's exactly as cruel as you would expect.
** An AnimatedAdaptation was slated to focus on the in series CosmicRetcon with Dawn appearing throughout the first four seasons. One idea was to have Angelus attack her instead of Willow. You can get details on the trope page as well as watching the four minute trial footage.
** Joss' original concept for what eventually evolved into "Buffy" was called "Rhonda the Immortal Waitress".
** If Creator/SethGreen hadn't left the show, everything from season 4 and up would likely have been very different. Oz would have remained with Willow, Xander would then have likely been the one to come out as gay considering Joss Whedon wanted either him or Willow to eventually be written as a homosexual, which also means that Anya would have either been written out or given a very different role than the one she had in the series while Tara likely would never have existed. Come season 6, it also would have meant that Oz would have wound up being killed by Warren had he and Willow still been together.
*** Not so sure about Tara... she was created specifically as a substitute for Willow (who had become too strong to be a vulnerable {{Woobie}}), suggesting we'd have gotten her even if Oz had stayed (and her introduction, the Wicca group at University, was pre-planned anyway given Willow's {{Arc}}). The uncertainty is whether she (or Willow for that matter) would've been a lesbian - apparently, it occurred to Joss that the two could (and should) be a couple because of Alyson and Amber's powerful on-screen chemistry (and he needed an Oz replacement), so they developed in that direction. Becoming an example of IJustWriteTheThing. On that note, if Creator/SethGreen had chosen to stay on, Veruca would've lasted for at least a while longer rather than dying so quickly; the intent was to have a LoveTriangle of Willow/Oz/Veruca that lasted well into the seaon, before Seth's departure necessitated a hasty conclusion to the arc. It's possible that if Seth hadn't left and Tara's chemistry as a LoveInterest to Willow was still realised, it might have become a [[LoveDodecahedron LoveSquare]] instead.
*** The Anointed One was going to be the BigBad of Season 2, but Andrew J. Ferchland's growth spurt made it impossible for him to pass as an eternal child, so Spike and Drusilla were created to take his place.
** Creator/NathanFillion auditioned for the role of Angel.

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