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''Beverly Hills, 90210'' was one of the most popular {{teen drama}}s during the early 1990s. It ran on Creator/{{Fox}} for ten years (from 1990 to 2000), and had all but changed its entire principal cast by the end of the show's run. It is generally agreed that the show declined in quality after the cast graduated high school.

The show focused primarily on the Walsh family, particularly fraternal twins Brandon and Brenda, who had just moved into Beverly Hills and were (at least initially) suffering a certain degree of culture shock. It is worth noting that the Walshes were the only original characters absent in the finale. The action also included the twins' friends Dylan, Steve, Andrea, Kelly, Donna, and David. The show managed to touch on almost all social issues, including drug use, drunk driving, rape, unprotected sex, abortion, and even apartheid. (There is a persistent rumor that Spelling wanted to license a U.S. version of the ''Franchise/{{Degrassi}}'' franchise but was turned down by that show's producers).

The show's casting includes some of the most dramatic examples of DawsonCasting in recent memory, to the point where many sites often refer to the trope as "90210 Syndrome". Luke Perry was 25 when he began playing Dylan as a junior; even worse, Gabrielle Carteris (Andrea), was 29 playing 16.

Had a SpinOff in ''MelrosePlace'' (which itself had a less successful spin off in ''Models, Inc.'') and a more recent SequelSeries simply titled ''90210''. The new series is mostly focused on a new cast of characters though Donna and Brenda have made cameo appearances and Kelly is an important reccurring character. Also Kelly's sister, main character (Erin) Silver is technically from the original.
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!!This original series contains examples of:

* AlcoholicParent: Kelly's mom. She got better.
* AnyoneCanDie: David's friend Scott and Dylan's girlfriend Toni Marchette.
* TheBeautifulElite
* BetaCouple: David and Donna in the earlier seasons.
* BettyAndVeronica: Brenda (Betty) and Kelly (Veronica) with Dylan (Archie).
** [[GenderFlip Genderflipped]] with Brandon (Betty) and Dylan (Veronica) with Kelly (Archie).
* BookDumb: Steve and Donna.
* CaliforniaUniversity
* ChickMagnet: Brandon, full stop. Sometimes also [[LampshadeHanging lampshaded]] by other characters. The other main guys can qualify too to some extent.
* DateRapeAverted: Kelly and a cowboy at a costume party. Donna & Brenda to the rescue
* DatingDoSiDo
* DistressedDamsel: Kelly Taylor to the extreme. Raped, burned, placed in a cult, pregnant/miscarried, addicted to cocaine, sleeping with everyone (but David), shot, [[ButtMonkey and so on]].
* DomesticAbuser: Ray Pruitt repeatedly abuses Donna. Most infamously, he pushes her down a flight of stairs, semi-accidentally.
* DumpThemAll: In the original Beverly Hills 90210, this is how Kelly resolves the Dylan/Brandon love triangle. "I choose me!"
* EarlyInstallmentWeirdness: It started as an episodic high school drama mainly focusing on the Walsh twins. Each episode had its own story and morale. From season two onwards, the plotlines started to arch over several episodes and the friends of the Walsh kids were given some limelight as well. And starting season five it went totally soap opera (similarly to Melrose Place).
** Also, during the first season, the opening was ''very'' different. It was a series of scattered scenes with the main characters hanging out in Beverly Hills rather than an OpeningCreditsCastParty, and it used an 80's styled pop/dance rendition of the show's theme song rather than the hard rock rendition used from season two onward [[note]]which was modified slightly in season four[[/note]].
* TheEighties: The first two seasons, but some shades of it are seen in season three and four. After season two, grunge fashion began to replace the bright colours and teased hair of seasons one and two. [[JustifiedTrope Justified]], because 80s pop culture still persisted into 1992.
* EightiesHair: All of the characters in season one and two (albeit a bit more muted in season two) but it disappeared throughout season three. Ironically, the character of Kelly, most obsessed with superficial things, kept her Madonna-inspired 80s hair and makeup into season four, but finally ditched it by season 5 for a post-grunge inspired look.
* FlyingSaucer: Only once.
* FourGirlEnsemble: Donna was the sweet naive one, Brenda was the DeadpanSnarker, Kelly was the pretty one, and Andrea was the smart one.
* FullHouseMusic
* GirlOfTheWeek
* HappilyMarried: Jim and Cindy Walsh.
* HighSchool
* ItCameFromBeverlyHills
* LoveDodecahedron
* LonelyRichKid: Many
* {{Meganekko}}: Andrea
* MinnesotaNice: The Walsh family in season 1, shown to be much more polite and down-to-earth than the Beverly Hills natives.
* MonochromeCasting: Aaron Spelling later said he regretted it. In fact he said it was his greatest regret regarding the show.
* NiceGuy: Brandon Walsh.
* TheNineties: After season 2, and entirely by season 5 onward. Despite the extreme DawsonCasting, the show did a great job at keeping up with pop culture, fashion, and hairstyles.
* NoGoingSteady: With Kelly probably being the worst offender.
* OpeningCreditsCastParty
* OverprotectiveDad: Papa Walsh was this for Brenda, while Brandon got a lot more slack.
* ParentalIncest: [[spoiler: Valerie's FreudianExcuse]]
* ProductPlacement: Most noticeable was the Peach Pit '''After Dark''', a club named after and using the iconic flying toaster logo from the Berkeley Systems screensaver series.
* PutOnABus: When Shannen Doherty [[strike: was kicked out of]] left the show, Brenda went back to [[strike:Minnesota]] London to attend college.
* RecklessGunUsage: A VerySpecialEpisode uses this [[spoiler: [[DroppedABridgeOnHim to kill off one of the regulars]]]], in front of David.
* RememberTheNewGuy: Valerie Malone, who arrived on the show following Brenda's exit, was introduced as a lifelong friend of the Walshes. Her existence had never been acknowledged prior. Also principal Harry Wilson was introduced as Kelly Taylor's never-before-seen-or-mentioned neighbour and life-long friend. See, photoshopped picture, so it must be true.
* ReplacedTheThemeTune: "The Green Room," the first episode aired after the pilot, features a different theme tune. [[https://www.youtube.com/watch?v=xrfk1hkDZN0 Check it out here.]] (By the way, the "Kelli Brook" listed in the end credits isn't ''that'' one.)
* RevolvingDoorCasting: Relatively limited in the earlier years, but by the end the show had gone through many, many cast changes.
* SecondEpisodeIntroduction: Dylan doesn't appear in the pilot.
* SelfHarm: In one episode, Donna finds her assistant cutting herself, after suspecting it. She tries to help her, eventually persuading her to get therapy.
* SensitiveGuyAndManlyMan: Brandon and Steve; Brandon and Dylan.
* SpecialGuest: Various musical performers, including Babyface.
* SpoiledSweet: Even though Kelly and Donna were both spoiled rich kids (and maybe somewhat shallow), neither one of them really had any AlphaBitch qualities.
* TeenDrama: TropeCodifier. It borrowed heavily from ''Series/DegrassiJuniorHigh'' but on a network budget, stripped out the more overtly educational elements and maxed the "shiny" end of the SlidingScaleOfShinyVersusGritty.
* TheirFirstTime: Dylan and Brenda, on prom night. Others had their first time during the course of the series too, but theirs was particularly highlighted.
* ThemeTwinNaming
* TonightSomeoneDies
* TroubledButCute: Dylan and others.
* UnintentionalPeriodPiece: This was the first of the many, many iconic [[TeenDrama teen dramas]] of TheNineties, and the first of many to fall into this trope. It also does a great job at keeping up with the times. Season one looks straight out of the 80s while season five and later look straight up 90s.

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!!The sequel series contains examples of:
* AlcoholicParent: Kelly and Silver's mom ''again''. She got worse,[[spoiler: she died]].
* AllGirlsWantBadBoys: Naomi certainly does want Liam. Annie seems to either genuinely not like him, or denying/hiding the fact. Regardless, she'll fall soon with the way things are going.
* AmbiguouslyJewish: Silver is half-Jewish through her father's side, which traditionally would be the wrong side to make ''her'' Jewish but she did sit shiva for her mother (though this could be a case of the writers forgetting Jackie was never Jewish in the original series.)
* AcquiredSituationalNarcissism: Adrianna big time. Fame rapidly turns her into an [[IdiotBall airheaded]] RichBitch.
* AlphaBitch: Naomi isn't all bad, and unlike a lot of Libbies she does have a genuinely nicer side, but she can still be an absolute bitch much of the time (and her sister is far worse.)
* BettyAndVeronica: The show has certain examples of this -
** Annie (Betty) and Naomi (Veronica), with Ethan (Archie).
** Ivy (Betty) and Naomi (Veronica), with Liam (Archie).
** Rhonda (Veronica) and Annie (Betty), with Ethan (Archie again).
** [[GenderFlip Genderflipped]] with Navid (Betty) and Teddy(Veronica), with Adrianna (Archie).
** Then Teddy (Veronica) and Dixon (Betty), with Silver (Archie).
** Max (Betty) and Austin (Veronica) for Naomi
* BitchInSheepsClothing: Jen seemed like a nice, caring older sister to Naomi in her first appearance. Right until we learn that she slept with Ethan while he and Naomi were together (she would later go on to sleep with Liam while he was dating Naomi and blame Annie for it).
** Annie and Dixon's cousin Emily seemed like a sweet, innocent girl who looked up to Annie at first. Then she turned all of Annie's friends against her, tried to steal Liam away from her, got Annie fired from her internship, and suspended from school... all while pulling the WoundedGazelleGambit.
* BookDumb: A rare female example - Naomi is of more or less average intelligence but it's frequently mentioned that's she's a poor student.
* BoundAndGagged: Naomi and Silver in ''Liars'', though only Naomi is gagged.
** Liam at the end of ''The Things We Do For Love'' and most of the next episode ''Misery Loves Company'', much to the [[{{Fanservice}} squee]] of fangirls.
* TheBusCameBack: Season 5 seems to be doing this for everyone. So far Debbie, Tracy, Ty, Jasper, Emily, and an even Annie's ex boyfriend Jason have made reappearances and that's not counting anyone who comes BackForTheFinale (which turned out to be no one)
* CallingTheOldManOut: When Navid's father blames him for revealing information that led to the police investigating him for [[spoiler: child pornography]], Navid told his father that it happened because he (the father) broke the law.
* ChekhovsGunman: After Oscar completes his revenge on Laurel, he stays around to help Naomi against Mr. Cannon.
* ChuckCunninghamSyndrome: Many characters, most notably Kelly Taylor and her son, Oscar
** Ivy in Season 5. She didn't get a sendoff like Austin or reference to leaving like everyone else. She's just gone and no one seems to remember her. She didn't even get mentioned until late in the season.
* ComingOutStory: [[spoiler: Teddy gets one, spaced over several episodes]].
* CompetenceZone: As of season four Navid and Silver play surrogate parents to Navid's sister Leila - who is all of a ''year'' younger than them but who acts and is treated like a 14 year old.
* ContinuityNod: The fact that the creators remembered Silver from the original series gives it some merit.
* DateRapeAverted - Mark on Annie; Jasper ends up saving her.
* DatingDoSiDo
* DawsonCasting: Teddy Montgomery is 17 or 18. His actor, Trevor Donovan, is 31.
** There's an InUniverse example with an undercover cop pretending to be a student who dates Ryan.
* DeadpanSnarker: Silver.
* DisappearedDad: The show ''loves'' this trope to the point of UnfortunateImplications - Ivy, Naomi (and thus also Jen), Liam, Adrianna, Silver, Sammy (Kelly's son) and most recently Navid, Annie and Dixon all have absent fathers. In fact ''none'' of the teenage cast have fathers much involved in their lives by late Season 3.
** In Season 4, Navid has a [[DisappearedDad Disappeared Mom]] as well.
* EnemyMine: It's hinted Annie and Vanessa are going to have to work together to save Liam from a LoonyFan
* EstrangedSoapFamily: Big time, even excluding those relatives who departed on bad terms. Notable examples include Naomi's mother Tracy who has not appeared since 2009 despite her daughter being raped, scammed out of her money by a cult, expelled from high school and nearly getting married.
** Harry didn't show when Dixon [[spoiler: almost died]]. And both parents were absent during his struggles with drugs
* {{Expy}}: At least initially the Wilsons where clearly intended to invoke the Walshes from the original series (Annie especially was very obviously the new Brenda) though it's lessened with time.
** Dixon also shares a few similarities with Clay Carlin from SouthOfNowhere. He may be an example of what Clay would be like if he hadn't met Sean
* FourGirlEnsemble: Annie is the sweet naive girl, Silver is the DeadpanSnarker, Adrianna is the one obsessed with glamor and fame, and Naomi serves as the cool big sister figure for the group.
* TheGenericGuy: Ethan had shades of this. There's a reason that no one misses him.
* GirlNextDoor: Annie.
* GranolaGirl: Silver and Ivy both have aspects.
* GratuitousJapanese: Donna. The Japanese people within the show appear to understand her; native Japanese speakers watching, not so much.
* HappilyAdopted: Dixon (mostly).
* HeelRealization: Navid has one after he [[spoiler: leaks a sextape of Liam and his professor onto the internet]].
* HotTeacher: Matthews. Arguably Harry too.
* HugeSchoolgirl: Silver - Jessica Stroup is 5'8, which isn't so noticeable next to the only slightly shorter (and usually high heel clad) [=AnnaLynne=] [=McCord=]. But when standing next to the petite and waifish Shenae Grimes can look unintentionally hilarious.
* JerkJock: Mark Driscoll.
* KarmaHoudini: Arguably Annie, whose punishment for a fatal hit and run (which she covered up for a whole ''year'') is a couple of months of (offscreen) house arrest.
* TheLadette: Ivy.
* LastNameBasis: Erin Silver prefers to go by 'Silver'.
* LikeBrotherAndSister: Almost the exact phrase Adrianna uses to describe her devolping friendship with Liam in Season 4.
* LovableAlphaBitch: Naomi evolves into this after her CharacterDevelopment in season 3.
* LoveDodecahedron
* LoveMakesYouEvil: Jasper has been a good example of this.
* LoveTriangle: Annie/Ethan/Naomi (first season), Naomi/Liam/Ivy (second season).
** Also Annie/Ethan/Rhonda (so-so), Ethan/Silver/Dixon, Teddy/Adrianna/Navid, Teddy/Silver/Dixon, Adrianna/Navid/Lyla, Debbie/Harry/Kelly, etc.
* MamaBear: Debbie can embrace this from time to time, especially when it came to Dixon and Sasha.
* [[ManipulativeBastard Manipulative Bitch]]: Jen.
* MySecretPregnancy: Jen kept the fact hat she was pregnant from Ryan. And when he did find out, she still didn't want him in the baby's life.
* NerdsAreSexy: Naomi thinks this of Max.
* NiceGuy: Dixon
* NoGoingSteady: With Annie probably being the worst offender.
** Although Naomi looks like she might be a close second.
* OddFriendship: [[AlphaBitch Naomi]] and [[TheSnarkKnight Silver]]. Later Naomi and Ivy.
* OperationJealousy: Ivy and Dixon form a fake relationship to show others (mostly Naomi) that they're over Liam and Silver respectively (in reality Ivy is still pining for Liam and [[ObliviousToLove oblivious to Dixon's growing feelings for her]].)
* OutOfFocus: Navid was nominally a main character from the first episode on but he had very little to do early in Season 1 before eventually being linked with Adrianna (who oddly was not an official main character at first but had a lot of early focus). In Season 2 and 3 Matthews is frequently out of focus and gone by Season 4 considering everyone has graduated.
* PreppyName: Teddy Montgomery
** Also InUniverse: Jen wants to name their son Jacques but Ryan prefers the more traditional Jack.
* PromotionToOpeningTitles: Adrianna, Liam, and most recently, Ivy and Teddy.
* PutOnABus: Ethan. Which was totally random, though he was being replaced by Liam and no one really missed him.
** Harry as of Season 3.
** Ryan and Debbie in Season 4
** Ivy as of season 5
* RichBitch: Naomi,until her CharacterDevelopment,her sister,Jen is even worse. Adrianna develops into one during Season 3 after her new found fame goes to her head.
* TheRunaway: Dixon, escaping behind his parents backs despite that Debbie grounded him, and going to Australia with Ivy.
* ShipTease: Season 4 has teased Adrianna with both Dixon and Liam.
* SmugSnake: Jen.
** Campbell.
* SpotlightStealingSquad: Focus of the show shifted from the Wilson family to Naomi somewhere between seasons 2 and 3.
*** Season 4 seems to split time between Annie and Naomi equally
** Liam was a minor version. The main guy was supposed to be Ethan but Liam proved more popular and Ethan was dropped.
* StalkerWithACrush: Jasper. Surprising?
* StraightGay: [[spoiler: Teddy]], also Marco
** [[spoiler: Alec]] who is in love with Max.
* SuddenlySexuality: Adrianna. And [[spoiler: Teddy]] in Season 3.
** Gia herself. It was true that there was little development up to the point where we find out but apparently all of the characters seemed to know.
* [[SurferDude Surfer Dudette]]: Ivy.
* TakingTheHeat: Austin took the blame for arson to protect Annie. Neither of them actually did it but the fire was started by Annie's friend Bree who was destroying evidence both she and Annie had been prostitutes; had Annie fingered Bree she would also have to reveal her own brush with prostitution and would have faced being kicked out of college at a minimum. Austin decided that Annie had more to live for so 'confessed' to get her off the hook.
* TeensAreShort: Both averted and played straight - the teenage characters have a decent range of heights and the tallest male and female characters (Teddy and Silver) are teens but Ivy, Annie, Adrianna and more recently Holly are all much shorter than their parents.
* TeenPregnancy: [[spoiler: Adrianna]]
* TomboyAndGirlyGirl: Ivy and Naomi, initially as rivals and later as an OddFriendship.
* TookALevelInJerkAss: Adrianna in season 3. She even went as far as [[spoiler: swapping out Silver's medication for Bipolar Disorder with placebos]].
* TroubledButCute: Liam.
* TwoTeacherSchool: Sure there are a decent number of teachers but apparently Ryan Matthews teaches Sophomore, Junior, and Senior English.
* WalkingShirtlessScene: Liam the most but Dixon is also shirtless quite often,
* WhamEpisode: 'Confessions'.
** 'The Heart Will Go On' as well
** 'Here Comes Honey Bye Bye' with [[spoiler: Riley's]] sudden death, [[spoiler: Max and Naomi's]] breakup and the reveal that [[spoiler: Teddy]] wants to use a surrogate
* WoundedGazelleGambit: Done with Annie's cousin Emily. Emily tells Annie's friends that she said a bunch of mean things about them (which wasn't true). When Annie calls her on this, Emily pretends to cry in front Annie's friends (who of course, side with Emily). Emily also trashes her own dressing room at the internship Annie works at and makes it look like Annie did it. The result? Emily is believed to be the victim and Annie is fired.
* {{Yandere}}: Jasper, Vanessa
** Though Vanessa has nothing on [[spoiler: Ashley]]. She uses her position as [[spoiler: Liam's bodyguard]] to kidnap him and installs cameras around his bar to watch him all hours of the day
* YourDoorWasOpen

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