* AbilityOverAppearance:
** Producers were reluctant to cast Creator/AmberBenson as Tara 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]]. Alyson won the part based on the fact that she didn't do that.
* ActingForTwo: In the flashback, the medieval Slayer and her Watcher are played by the same actors as Buffy and Merrick. On the other hand, the Slayer and the Watcher continually reincarnate looking identical to her past lives, so they are theoretically still the same characters.* 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:
** Creator/JamesMarsters 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. Head 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 [[NightmareFuel 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 Lovers 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.
** Faith became a Boston native after Creator/ElizaDushku was cast, though Eliza herself is actually from Watertown rather than South Boston like Faith.
* BreakthroughHit: For Creator/JossWhedon.
* CreatorsFavorite: Xander (who was a stand in for Joss), Dawn (with her actress 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. In an extreme example, Creator/CharismaCarpenter was 26 when she played 16-year-old Cordelia. Similarly, there's 22-year-old Kristy Swanson playing high school senior Buffy.
** Averted by Dawn and Faith, who are both the same age as the actresses playing them (Creator/ElizaDushku was even legally emancipated from her parents so she wouldn't be limited by child labor laws).
* FakeNationality: The medieval maiden played by the California-born Swanson in the flashback sequences would obviously have to be non-American. She comes off as [[FakeBrit English]] [[NotEvenBotheringWithTheAccent (not that Swanson tries very hard)]], but a brief line by Merrick suggests that she was Hungarian. (In the original script, she's an Italian.)
* FakeBrit:
** Spike, played by American Creator/JamesMarsters.
** Wesley, played by Seattle native Alexis Denisof.
** And with Merrick himself, of course, we have a British character being played by a [[CanadaEh Canadian]].
* 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.
* ThrowItIn: Amilyn's ludicrously protracted and over-the-top death in the movie, ad-libbed by Paul Reubens.
* ThePeteBest: Swanson. Then again this was 1992 and it wouldn't be five years till the TV series long after Swanson grew out of the role.* PlayingAgainstType: So Creator/SethGreen isn't the PluckyComicRelief?
* 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]]."
* RecycledTheSeries: Although not so much recycled as "remade properly" according to Creator/JossWhedon's vision.
* RomanceOnTheSet:
** Here's an odd one: Amber Benson and Adam Busch... who played Tara and Warren respectively.
** Creator/AlysonHannigan (Willow) is married to Alexis Denisof (Wesley).
* ThrowItIn:
** The famous Creator/MutantEnemy title card was reportedly scribbled by Whedon with only seconds to go until broadcast.
** 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/BuffyTheVampireSlayerS3E18Earshot Earshot]]" with Giles walking into a tree was ad-libbed by Creator/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]].
** 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.
* WagTheDirector: According to Whedon, Donald Sutherland was under the impression that he was the star of the film. And rewrote all of his dialogue.
* 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]].
** When the show was being pitched and the WB were interested, they considered giving it a timeslot for the 1996-97 season (which would likely have resulted in a full 22-episode season 1); it lost this battle to ''Series/SeventhHeaven'', becoming a MidSeasonReplacement when ''Series/{{Savannah}}'' was cancelled in early 1997. In hindsight, had the WB execs. chosen differently both shows would likely have turned out different - among other things, Creator/AlysonHannigan had not yet been cast; the Master arc would also have been effected, with an extra 10 episodes and the possibility of the Annointed One not being pre-emptively killed off; etc.
** 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.
** Creator/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. In turn, [[spoiler:Jenny]] 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 Creator/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 may never have existed. Come season 6, it also would have meant that Oz would have wound up being the one killed by Warren.
** 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.
** The vampire Sunday from "The Freshman" was originally going to be mentioned as a Slayer who had been turned into a vampire, to explain why she was powerful enough to defeat Buffy in their first fight.
----