* TheCastShowoff: In both versions of the show, Skeeter Valentine is voiced by Fred Newman, who, much like Skeeter, is highly talented at providing sound effects with his mouth. In addition, Newman did most of the music on the show with just his mouth sounds.
* ChannelHop: Started out on Creator/{{Nickelodeon}}. Then moved to Creator/{{ABC}}. Then finally to Creator/DisneyChannel before disappearing off the radar completely.
** It's all very complicated company politics. Jumbo Pictures first managed to sell some of their ideas to Viacom and become a partner, subsequently getting on Viacom's payroll. Shortly after the wrapping up of Season 4, Viacom shafted them. Conveniently, right after Viacom gave them the boot, Disney came up to them and sweet-talked them. They cut off all ties with Viacom and then managed to partner up with Disney instead, getting on Disney's payroll. Which after 4 seasons and a movie, ended in another dispute because Disney used ''Doug'' and ''PBAndJOtter'' characters in a multi-network music video project that Jim Jenkins did not want the characters to be participating in due to his own beliefs. They then broke up their ties with Disney, changed the company name to Cartoon Pizza, and learned the hard way the downsides of partnering up with a major television network.
* CreatorBacklash: Jim Jinkins wasn't as involved with Disney's Doug as much as people often thought he was according to Mathew Klickstein's book ''Slimed: An Oral History of Nickelodeon's Golden Age''. He's one of the few creators that actually agrees with the majority of the fanbase that the Nickelodeon version was better except for "The Dark Quail Saga". Constance Shulman and Billy West prefer the Nickelodeon version too.
* CrossDressingVoices:
** In the American version, Elmo is voiced by Beebe's voice actress, and Doug's grandmother is voiced by Fred Newman (who also played Skeeter, Mr. Dink, and others).
** In the Japanese dub, Creator/MasakoNozawa is Doug.
* TheDanza: Guy Hadley voices Guy Graham.
* GodNeverSaidThat: Since ''Doug'' started in the 1990s, it was often rumored that Skeeter was suppossed to be the BlackBestFriend (but depicted as blue, as blue and purple are often used in sci-fi and speculative fiction to depict black people or any minority who isn't white). Jim Jinkins has stated that he didn't color Skeeter blue as a substitute for making him black; he made Skeeter blue because he thought he looked good that way.
* KeepCirculatingTheTapes:
** The Nickelodeon series: When it was first released on Amazon for their on-demand service, there was a good chance that it had playback errors, and two episodes were missing from season four because of "technical difficulties". However, in June 2014, Amazon made available a [[http://www.amazon.com/Doug-Complete-Nickelodeon-Billy-West/dp/B00LBHOCHS/ref=sr_1_1?ie=UTF8&qid=1424918703&sr=8-1&keywords=doug new release of the show on DVD]] now known as "The Complete Nickelodeon Series" including [[ExactlyWhatItSaysOnTheTin every]] [[CaptainObvious Nickelodeon episode]] including the two segments missing from the Season 4 set. It's available on iTunes, as well.
** The Disney series: Compared to the Nick version, this is the only one that is not quite possible to get. The show was only released on VHS, it has been out of print since then, and there's only a handful of episodes online. Heck, ''TheMovie'' never saw a DVD release until recent years as a Disney Movie Club-exclusive (although it's the Creator/ToonDisney cut), which is no longer available as of 2016. It's still ''available'' for video rental/purchase on Amazon, if you want to view the original version of it in this day and age.
*** The movie ''was'' released on [=VideoCD=] in many second world countries. The catch? '''''Was'''''. It's out of print, too.
* NoExportForYou: Some foreign markets only air the Nickelodeon series of the show in these days.
* NonSingingVoice: Doug Pries is the voice of Mr. Bone but Fred Newman voices him when he yodels.
* TheOtherDarrin:
** Thomas [=McHugh=] and Chris Phillips replaced Creator/BillyWest (who didn't want to be part of the Disney variation of ''Doug'') as Doug and Roger's voices, respectively, in the Disney series. This was [[LampshadeHanging made note of]] with Doug in its first episode.
** When the Disney series was released in Latin America, it suffered a whole dub recast from the Nick's version.
* TalkingToHimself:
** Creator/BillyWest voices Doug and Roger in the Nick series.
** After West left, Roger ended up talking to himself with Boomer's voice actor in the Disney series.
** Judy shares her voice actress with her mom, Theda.
** Fred Newman voices ''many'' characters in the series, so this happens frequently (whenever Skeeter and Mr. Dink interact, for example).
* RelationshipVoiceActor: In the Latinamerican Spanish dub, Patti Mayonnaise was voiced by Paty Acevedo in the Nick version, and later [[TheOtherDarrin replaced]] by Rossy Aguirre in the Disney version. Both were in ''Anime/SailorMoon'', as the titular's main character and Sailor Mercury, respectively.
* WhatCouldHaveBeen:
** The original ''Doug'' product was going to be a children's book, "Doug Gets a New Pair of Shoes", until the creator found out that Nickelodeon was looking for cartoonists for new original cartoons (during this time, all of Nickelodeon's cartoons were either imported from other countries [mostly from continental Europe, Japan, or Canada] or part of a syndication package [the ''WesternAnimation/LooneyTunes'' shorts and the UPA cartoons of the 1950s]), and decided to turn it into a cartoon series. The book ended up serving as the episode "Doug's Cool Shoes" in season one.
** Roger was going to be a rival to Doug for Doug's love interest, Patti. This was scrapped, and the role was taken by Guy once the show was switched over to Disney.
** The movie was going to be a DirectToVideo release, but Disney decided put it into theaters due to the success of ''WesternAnimation/TheRugratsMovie''. Critically, it didn't work. In box office numbers, it grossed much less than ''Rugrats'', but it was still a huge profit for Disney.
** ''Doug'' could have had a movie in 1993. Creator/{{Nickelodeon}} signed for a contract deal with the 20th Century Fox to release movie adaptations for its three original Nicktoons, but the contract fell through before they could make a movie deal. So, once Viacom (Nick's company) bought Paramount, ''WesternAnimation/{{Rugrats}}'' got its movie in 1998, Disney ended up making a ''Doug'' movie, while ''WesternAnimation/TheRenAndStimpyShow'' never got one. It's unknown whether Fox's version of "Doug's 1st Movie" would've been the same movie as it became.
** The Movie was originally going to be called "The First Doug Movie Ever", but was later retitled to "Doug's 1st Movie".
** Much like ''Rugrats'', ''Doug''[='=]s popularity and ratings really soared when it went into daytime syndication. But Disney bought the rights to the show and sweet-talked Jumbo Pictures into dumping Nickelodeon (Jumbo and Nick were already on sour terms at that point) before they had a chance to [[{{Uncancelled}} uncancel]] it.
* Acclaimed playwright [[Film/GangsOfNewYork Kenneth Lonergan]] wrote at least one episode of the series: "Doug Throws a Party" a mere two years before what's considered to be his BreakthroughHit play ''This Is Our Youth'' premiered. [[NotMakingThisUpDisclaimer We're not joking.]]