* ActorAllusion: Koosalagoopagoop is voiced by Creator/DomDeLuise and is a parody of the increasingly saccharine Creator/DonBluth movies [=DeLuise=] had been in, like ''WesternAnimation/ATrollInCentralPark''.
** Rasslor from the ''Dial M For Monkey'' episode of the same name was voiced by RandySavage. His last line in the episode was, naturally, "''OH '''YEAAAH!'''''".
* AdoredByTheNetwork: Well not surprising considering it was one of Cartoon Network's first successful original animated series. But from 98-2001, it, along with ''WesternAnimation/PowerpuffGirls'' were the flagship shows of the network.
* BannedEpisode: "Rude Removal." Available from Creator/AdultSwim's website for a brief period. You can find the "uncensored" version on Youtube, but the swear words are nothing more than the sounds of various other words spoken in the episode spliced up and combined together. In other words, it's not officially uncensored.
-->"We're going to #&@$ UP YOUR LAB!"
* CrossDressingVoices: Dexter was voiced by two women in English.
** In Mexican Spanish, German, and Danish; Dexter is voiced by a man.
* TheDanza: Paul Williams himself guest stars in the episode "Just an Old Fashioned Lab Song" as Dexter's piano instructor.... Prof. Williams, who is drawn [[ActorAllusion roughly the same hight as Dexter]].
* HeyItsThatVoice: Dexter's first voice was [[WesternAnimation/{{Rugrats}} Chuckie Finster]], Film/{{Babe}}, and [[WesternAnimation/DarkwingDuck Gosalyn Mallard]] (ChristineCavanaugh); his second voice was [[WesternAnimation/TinyToonAdventures Sweetie Bird]], [[Film/CoolWorld Lonette]], and that loud, obnoxious teacher (and the mom) from ''WesternAnimation/CowAndChicken'' (Creator/CandiMilo).
** The ending narration over the credits was provided by {{Mako}} (Aku from ''SamuraiJack'')
** Dexter's Mom is voiced by KathSoucie who voices a lot of other characters: [[WesternAnimation/HeyArnold Helga's ambiguously alcoholic mom, Miriam]], [[WesternAnimation/CaptainPlanetAndThePlaneteers Linka]], and [[WesternAnimation/{{Rugrats}} Phil, Lil, and Betty DeVille]], among others.
** Dexter's Dad was JohnnyBravo, [[CodenameKidsNextDoor Mr. Boss]], and a certain CandleJack, among others (JeffBennett).
** [[WesternAnimation/AnAmericanTail Tiger]] was Dee Dee's imaginary friend, Koosalagoopagoop, in "The Koos is Loose", "Koosalagoopagoop", and "Jeepers Creepers, Where is Peepers?".
** In Hungary, Dexter's first voice was [[Manga/DeathNote Near]] [[note]](not [[Film/TheHotChick Jessica Spencer]].)[[/note]].
*** In fact, Hungary holds a reunion for the ''Anime/SailorMoon'' cast: Dexter's first voice was Melvin; Dee Dee is Chibiusa; Dexter's first mom was Sailor Neptune; Mandark's first voice was Alan's second voice; and Dexter's second mom was Berthier, Karonite, Eugeal, Mimet, Telulu, PallaPalla, and Fisheye. Mandark's second voice is not Chad.
** Eddie Deezen is Mandark.
** Computress is basically Nicole from SonicSatAM. (KathSoucie)
** One episode featured none other than PaulWilliams, performing an uplifting song about [[http://www.youtube.com/watch?v=A0wfawLYjjQ the glorious union of music and science]]!
** Martin Mull and Fred Willard are two of Dexter's robots that are [[http://www.youtube.com/watch?v=sc8hzAp11bg ridin' that hog!!]]
** In Mexico and Denmark, Dexter is [[Disney/TheManyAdventuresOfWinnieThePooh Piglet]].
** In Spain, Dexter and Dee-Dee are [[WesternAnimation/TheSimpsons Bart and Lisa]], respectively.
* KeepCirculatingTheTapes: Bits of the first season were released on a now out-of-print VHS tape, the same goes for a collection of Genndy's favorite episodes. "Ego Trip" was released ''only'' on VHS, and that's out of print as well. The first season did get an official DVD release, but it does not include the banned "Dial M for Monkey" cartoon "Barbequor". Thankfully, the entire series (sans "Barbequor" and "Dexter's Rude Removal") is available on iTunes, and the entire first and second seasons (again barring "Barbequor") are available on Netflix.
* MissingEpisode: "Dexter's Rude Removal", an episode the crew made for themselves as a joke which contained heavy use of profanity that not even Creator/CartoonNetwork would find permissible. Before the end of 2012 it had been aired outside crew parties only once, at a Genndy Tartakovsky panel at a convention where they kicked out everyone under 18. Creator/AdultSwim released the episode for a brief period on YouTube.
** ''Dos Boot'' (the name being a {{pun}} on Film/DasBoot) sometimes goes missing due to complaints about it GettingCrapPastTheRadar (the CreepyCrossdresser ending involving a Photoshop {{Expy}} and accusations the episode was a full-on criticism of the IT world).
** It is still available as KeepCirculatingTheTapes via Website/YouTube and Eastern European video sites.
** "Rude Removal" (as mentioned above) was one until [[http://www.youtube.com/watch?v=TLN_ka1ZSDg many years had past]].
** "Dial M for Monkey: Barbequor" isn't on the official Season 1 DVD, although it is availible online in a few places.
* OfficialFanSubmittedContent: The script for "Dexter and Computress Get Mandark!".
* TheOtherDarrin: Dexter's VA went from Christine Cavanaugh to Candi Milo when the former retired from voice acting early on in the last two seasons.
** Dee Dee's VA continuously alternated between Allison Moore and Kat Cressida.
* TalkingToHimself: Creator/FrankWelker does this whenever both Monkey and Quackor face off.

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