* AdoredByTheNetwork: Creator/AdultSwim has stated numerous times that of all the anime the network has ever aired, it considers ''FLCL'' as its favorite.
** PromotedFanboy: And, fifteen years later, they're now co-producing a sequel to it.
* AnimeFirst: The series was later adapted into a two-volume manga, which was less comedic and even more of a MindScrew than the original series. An omnibus edition of the manga was released in 2012, featuring an additional story and lots of artwork and character designs.
* ColbertBump: Music/ThePillows. Oh, so much…
* DoingItForTheArt: Tsurumaki stated that the reason FLCL exists was because he and his staff had become burnt out from making ''[[Anime/NeonGenesisEvangelion End of Evangelion]]'', so they wanted to do something to help them blow off steam.
* KeepCirculatingTheTapes: Not the case anymore, but the show fell into this in North America for a few years due to a combination of its continuing popularity and the licensor (Synch-Point) folding not long after releasing a [[UpdatedRerelease complete boxset with additional extras]]. In the months before Funimation rescued the license, copies of the original [=DVDs=] (to say nothing of the boxset) were going on Website/{{eBay}} for ridiculously high prices.
* NetworkToTheRescue: Synch-Point went out of business, and for years there were no [=DVDs=] after the initial print run of the box set. Luckily, Creator/{{Funimation}} decided to re-release the series on a single DVD and give it its first ever (American) UsefulNotes/BluRay release. Similarly, after Creator/{{Tokyopop}} shut down its American division, Creator/DarkHorseComics released an omnibus edition of the manga.
* PortmanteauSeriesNickname: A rare case in which the "nickname" is essentially the primary official name.
* SequelGap: The sequel to FLCL is being made 17/18 years after it originally aired in Japan, and 14/15 years after its U.S. airing.
* StarMakingRole:
** Haruko Haruhara for Creator/KariWahlgren. She was completely new to voice acting when she was cast.
** Mamimi for Creator/StephanieSheh (which would be solidified with her roles as [[Manga/{{Naruto}} Hinata]], [[Anime/EurekaSeven Eureka]], [[Manga/{{Bleach}} Orihime]], and to some 2010s audiences, [[Manga/SailorMoon Usagi Tsukino/Sailor Moon]]), to a lesser extent – before this, her only VA credits were bit parts.
* WhatCouldHaveBeen: Creator/AdultSwim [[http://toonami.tumblr.com/post/40676079770/so-since-toonami-and-adult-swim-were-responsible-for tried to have a second season made]], kinda like what they did with ''Anime/TheBigO''. However, they just recently got their wish.
* The English dub for this series may be the only one ''not'' set in pre-Meiji times to keep characters' names in Eastern style. This threw off the voice actors a lot, as shown in the outtakes. The manga flips their names to Western style, as does this site.
* There was one animation director at Gainax who, for whatever reason, absolutely ''loved'' Eri Ninamori. He insisted he be allowed to helm every scene where Ninamori appears. This is why the times she's on screen look and feel similar to each other, even if the entire rest of an episode is made in a completely different style.
** He wrote some notes (that were translated for the US DVD) for Episode 3's back cover. It's… kinda disturbing.
** This helps to explain why "Full Swing" – the only episode where Ninamori is absent – feels so "off" compared to everything else, even considering its MindScrew context.
* Haruko is [[TheSouthpaw left-handed]] because the director isn't. Kazuya Tsurumaki believes left-handed people are more interesting and fun.
* Amarao's eyebrows are scanned seaweed.
* In the original version, the voice actor of Naota's cat (Miyu Miyu) is credited as "?". [[WordOfGod Tsurumaki revealed that]] Creator/HideakiAnno himself provided the cat's voice.
** Given some wonderful {{Lampshading}} in the series itself, when Naota's talking about the school play:
--->'''Naota:''' All I play is a cat.
* The enormous "animated" hand in Ep 5 is actually a digitally altered video of the director's hand.
* The anime short [[http://animatorexpo.com/icanfridaybyday/ I Can Friday By Day!]], created by the anime's director and the manga's author, seems to take place in the same universe.
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