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!! For the original TV series:
* AbsenteeActor: Charlie may not be seen [[spoiler: (except for the SeriesFinale)]], but "Avenging Angel" is the only episode in which he also isn't heard.
* ActorAllusion: John Bosley's name is a reference to the fact that his actor David Doyle was often mistaken for actor Tom Bosley.
* BigNameFan: Creator/AynRand was a great fan of the show, considering the idea of beautiful women doing impossible things to be a welcome divergence from its contemporaries.
* TheCastShowoff: Before joining the series, Cheryl Ladd was already known as a singer (she was one of the singing voices in ''Series/JosieAndThePussycats'' and recorded an album with the group), and she used her fame on ''Charlie's Angels'' to launch a solo singing career that actually scored a few hits in the late 1970s. Not surprisingly, the series built an episode titled "Angels in the Wings" around Kris performing in a musical, allowing Ladd to sing several tunes.
* MoneyDearBoy:
** In an "Emmy TV Legends" interview 'John Forsythe' called the show a "potboiler"; (a bad show), of deliberately poor quality, made quickly on the cheap solely to make a lot of money, which it did. Money is also the reason he was never seen on-screen, claiming he'd have needed to be paid a lot to do so.
** Jaclyn Smith was eventually given a raise from $5000 an episode to $40,000 to prevent her from leaving the show.
* TheOtherMarty: The original Charlie was fired due to his drinking problems. John Forsythe was asked to do the voiceover on the midnight of the Friday before the pilot was to be broadcast. He recorded the first voiceover in his pyjamas.
* ThrowItIn: Kate Jackson suggested the name 'Charlie's Angels' after seeing a poster of angels in Aaron Spelling's office.
* UnintentionalPeriodPiece:
** The fact that the series often takes place in fashionable or then-modern settings makes it positively scream [[TheSeventies 1970's]] today.
** The series features lots of 70's fashions, designs, hairstyles and sets that may seem either cool or cheesy today.
** Several episodes also display the rampant discrimination against women that was still common in the era (usually in a lampshading manner as the Angels soon prove how outdated those viewpoints are).
** It's perhaps telling that the series didn't survive very long into the 1980s.
* WagTheDirector: A lot of writers were fired from the show because the stars were always demanding better scripts.
* WhatCouldHaveBeen:
** Reportedly it was Creator/AynRand's favorite show and Farrah Fawcett was her top choice for the role of Dagny Taggart if ''Literature/AtlasShrugged'' was ever turned into a movie.[[note]]Unfortunately the movie version arrived two years after Miss Fawcett passed away.[[/note]]
** Producers originally wanted to have a BlondeBrunetteRedhead trio as the Angels, but they abandoned this in order to have Jaclyn Smith as the third Angel. They finally got their redhead when Tanya Roberts joined in Season 5.
** Kate Jackson originally signed on to play Kelly, being the first name the showrunners had in mind. However, when she warmed up to the role of the rather brainy Sabrina, the producers cast Jaclyn Smith as Kelly instead. This is why the pilot episode mainly focuses on Kelly.
** At the end of the fifth season, Jaclyn Smith’s five year contract was up, and she had made it clear she was not going to return. Interestingly enough, her character apparently was going to be killed off. But when the show was cancelled instead of renewed, it was decided that Kelly should remain alive for the sake of syndication. Had there been a sixth season, Kelly would have died.
** Creator/KimBasinger, who appears in the episode "Angels in Chains" as an inmate, was later offered the role of Kris Munroe and turned it down because she wanted to do film.
** Among the actresses considered for the role of Tiffany Welles were Creator/MichellePfeiffer and Creator/KathieLeeGifford.
** Kate Jackson was cast as Joanna in ''Film/KramerVsKramer'' but filming would overlap with ''Charlie's Angels''. Despite attempts to work around Aaron Spelling's schedule, Kate had to drop out and Creator/MerylStreep got the part instead.
* WorkingTitle: The series had two alternate titles: ''The Alley Cats'' and ''Harry's Angels''.

!! For the 2000 Film series:
* AbilityOverAppearance: In the original script, Vivian Wood was Chinese and her name was Vivian Wu. Once Creator/LucyLiu was cast as Alex, they changed her to Caucasian.
* ActorAllusion:
** When Dylan uses a flamethrower in ''Full Throttle'', the song "[[Music/TheProdigy Firestarter]]" plays, as a reference to Creator/DrewBarrymore's role in the film ''Film/{{Firestarter}}''.
** In the first film, the house in which the two kids are playing a videogame when a naked Dylan comes knocking is the same house from ''Film/ETTheExtraTerrestrial''.
** Dylan can also be seen wearing a ''Literature/HarryPotter'' themed disguise at the start of the first film. Drew Barrymore is a massive fan of the series.
** Jason (played by Matt [=LeBlanc=]) is an actor and a bit of a ditz. [[Series/{{Friends}} Sound familiar]]?
** [[Film/{{Caddyshack}} Bill Murray mentions talking to a squirrel]].
** Creator/BruceWillis plays the first federal agent [[spoiler:Madison Lee (Creator/DemiMoore)]] kills. Guess that divorce wasn't as amicable as they made it seem...
** In the sequel, [[Film/JayAndSilentBobStrikeBack Carrie Fisher plays a nun]].
* ActorInspiredElement: Creator/CrispinGlover came up with many of his character's eccentric trades, such as ripping off women's hair, sniffing it and then screaming.
* DyeingForYourArt: The women trained with their martial arts master for three months, eight hours daily (except weekends).
* HostilityOnTheSet: During the filming of the movie, there was apparently so much hostility between Creator/BillMurray and Creator/LucyLiu (he repeatedly called her acting skills into question) that she attacked him at one point, forcing the crew to separate them. [=McG=] also claimed that Murray headbutted him, which Murray denies.
* IronyAsSheIsCast: Creator/CameronDiaz is a trained ballroom dancer, and had to be told to dance terribly after the dream sequence.
* RemakeCameo: Jacyln Smith appears in the sequel.
* RoleReprisal: The Japanese dub deserves a special mention, as Charlie's Japanese voice actor (Tadashi Nakamura) reprise his role from the dub of the TV series in both films.
* RomanceOnTheSet: Drew Barrymore and Tom Green were dating at the time.
* TroubledProduction: Creator/BillMurray and Creator/LucyLiu had trouble getting along on a daily basis, often erupting into shouting matches (one argument even stopped production for a day). Beforehand the script was rewritten about thirty times until it was deemed "acceptable".
* WagTheDirector:
** Creator/DrewBarrymore insisted that the Angels be able to do all their fighting without firearms, hence why only the bad guys use guns.
** The Thin Man originally had lines, but Creator/CrispinGlover disliked what was in the script and asked for them to be changed. The director and producer then decided to make him TheVoiceless because it made the character more mysterious.
* WhatCouldHaveBeen:
** The role of Alex was originally offered to Creator/AngelinaJolie who turned it down after admitting she was not a fan of the original series. It was then offered to Jada Pinkett Smith who declined it to film ''Film/{{Bamboozled}}'' instead. Thandie Newton was finally cast but had to leave owing to freak weather which caused the ''Film/MissionImpossibleII'' schedule to overrun. The role was eventually taken by Creator/LucyLiu.
** Creator/MillaJovovich, Creator/AlyssaMilano and Creator/JuliaRoberts were among the many actresses who were forerunners for Natalie, Dylan and Alex.
** Creator/AsiaArgento, [[Music/TheSpiceGirls Victoria Beckham]], Creator/HalleBerry, Creator/HelenaBonhamCarter, [[Series/SexAndTheCity Kristin Davis]], Music/LaurynHill, Creator/JodieFoster, [[Music/TheSpiceGirls Geri Halliwell]], Creator/SalmaHayek, Creator/AshleyJudd, Creator/JenniferJasonLeigh, Nia Long, Creator/GwynethPaltrow, Tiffani Thiessen, Creator/UmaThurman, Creator/LivTyler, Creator/KateWinslet, Creator/ReeseWitherspoon, Robin Wright, Creator/ReneeZellweger and Creator/CatherineZetaJones were considered for Alex Munday.
** Music/{{Aaliyah}} was the first choice to play the role of Alex but was deemed too young.
** Creator/BillMurray didn't return for the sequel, as he was busy with ''Film/LostInTranslation''.
** Jaclyn Smith, Kate Jackson and Farrah Fawcett - were invited to make RemakeCameo appearances, but declined. Reportedly, Fawcett said she'd only do it if she were allowed to be the voice of Charlie, and Jackson insisted on playing the role of Vivian Wood that eventually went to Kelly Lynch. Ultimately, John Forsythe and Smith did appear in its sequel. Smith's role was uncredited, however.
** Creator/JamieFoxx was originally in talks to play the new Bosley.
** Music/CourtneyLove was offered the role of Madison Lee, but turned it down.

!! For the reboot TV series:
* FakeAmerican: Rachel Taylor as an American since she's an Australian.
* ThePeteBest or TheOtherMarty: Robert Wagner was set to be the voice of Charlie (replacing the late John Forsythe) but was prevented by scheduling conflicts; ultimately Victor Garber supplied Charlie's voice.
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