* ''Manga/LuckyStar'' has quite a bit of this thanks to its numerous modern-day media references to anime, manga, video games, etc. Prime examples include multiple shoutouts to its fellow KyotoAnimation anime ''[[LightNovel/HaruhiSuzumiya The Melancholy of Haruhi Suzumiya]]'' and the guest appearances of the character's own voice actors
** Probably the prime example of this is in the last episode. [[OccidentalOtaku Patty]] bribes Konata (voiced by Creator/AyaHirano) with a ticket to a live event where she can meet... Aya Hirano
** Of course there's also an earlier episode where [[Creator/AyaHirano Konata]] attends the ''Suzumiya Haruhi no Gekisou'' live concert and sees Hirano on stage.
** Aya also appears in the first strip of volume 5 of the manga -- eating a [[TrademarkFavoriteFood choco-cornet]], from the pointy end, no less -- and is noticed by Konata (and Hiyori, who calls her "that girl from ''LightNovel/{{Haruhi|Suzumiya}}'')".
** During one of the Lucky Channel spots, [[HotBlooded Anime Tenchou]] questions Akira (Hiromi Konno) on her feelings for a handful of her previous roles, for her to nonchalantly ask who those people are.
** The show also bizarrely folds in on itself in one of the later episodes where Konata, in RippedFromTheHeadlines fashion, finds a plaque that reads "Konata is my wife."[[note]]It could also be a pun on Konata's name, since "konata" means "here" in Japanese. "Here is my wife."[[/note]]
** In that same episode, while on the school trip, Konata insists a visit to the local anime studio is a must (guess which one).
* A case in ''Manga/DetectiveConan'' once revolved around the eponymous character and his friends meeting singer Creator/MinamiTakayama. Minami happens to do the voice of Conan Edogawa, and their similar voices were pointed out by other characters. That story also appeared in the original manga. Not so weird, considering mangaka Gosho Aoyama was dating, and then was briefly married to, Minami.
** This trope also creates some pretty big FridgeLogic thanks to the crossover film ''Anime/LupinIIIVsDetectiveConan''. The crossover indicates that both characters exist in the same fictional universe. But that then raises questions concerning the iconic character Franchise/SherlockHolmes: in Conan's series, Holmes is a fictional character like in ours, and the original stories are what inspired Shinichi/Conan to become a detective in the first place. In Lupin's series, however, Holmes was a real life person, and an episode of the second ''Lupin'' series even has the master thief meeting and impersonating the detective's grandson!
*** Furthermore, movie 11 establishes that Sato-san is a fan of Lupin III and is therefore upset when a criminal wears a Lupin III mask. Given that she is a police officer and would not be a fan of a real thief, this would only make sense if Lupin III is a fictional character.
* An episode of ''Anime/AkahoriGedouHourLovege'' has two of the Hokke sisters meeting their own voice actresses and then proceeding to argue about which one of them is better.
** Something similar happened in the ''Anime/ExcelSaga'' anime, [[NoFourthWall but then again the series has had a rather tenuous grasp on the fourth wall to begin with]].
* Completely pulled off in ''LightNovel/NogizakaHarukaNoHimitsu'', {{Meido}} Nanami Nanashiro distracts the proud {{Otaku}} Nobunaga Asakura by telling him that seiyuu Creator/KanaUeda is nearby and proceeds to mimic her voice to make Nobunaga 'chase' the seiyuu. Of course, Kana Ueda herself ''is'' the seiyuu of Nanami.
** In the first episode of the second season, Yuuto and Haruka (who's voiced by Creator/MamikoNoto), go to see the voice actress of a ShowWithinAShow. The character she voices heavily resembles Haruka and is also voiced by Noto -- in the show's universe. Essentially resulting in Haruka going to meet her own voice actress.
** It comes around full circle in episode 10 where Yuuto visits a recording session for ''Nocturne''. It is heavily implied that the five seiyuu who were recording roles in ''Nocturne'' were Creator/MamikoNoto, MaiGoto, Creator/KaoriShimizu, Creator/KanaUeda, and Creator/RinaSato. Also, Asakura tells Yuuto about a certain ReikoTakagi, who is in fact, Asakura's own seiyuu. Taken to UpToEleven in the ''Nogizaka Vocabulary Essentials'' section, where the word is "WataruHatano," Yuuto's seiyuu.
* Done several times in the original ''Manga/AstroBoy''. Once, when showing a theme park full of fictional creatures, a villain disparagingly refers to "Those creepy gourd creatures Tezuka draws," indicating that Creator/OsamuTezuka, the creator of ''Astro Boy'', ''does'' exist in their universe. Another time, a bad guy taunts the Professor by saying, "And what have you done with Astro? You've just made a stupid show of him for TV!"
* ''LightNovel/{{Kampfer}}'' seems to love this for some weird reason. Counting off, we've got Creator/YuiHorie, Creator/YukariTamura, and Creator/NanaMizuki all mentioned when their own characters were arguing. Surprisingly, Natsuru (voiced by Creator/MarinaInoue) has yet to be brought up by anyone.
** This started off in the LightNovel with reference to Yukari Tamura being mentioned as the voice of one of the animals. When she got the actual role the studio asked her to 'sound like Yukari Tamura' when she pointed out she WAS Yukari Tamura, they said 'yeah but try not to sound like one of your characters but as yourself'. Pretty meta.
* ''Manga/{{Bakuman}}'', which as a manga about trying to create manga is already up to its ass in PostModernism, has references to ''Manga/DeathNote'' and to "the author of ''Death Note''" in the very first chapter, although the latter is not referred to by name. ''Bakuman'', of course, is created by the same writer/artist duo that created ''Death Note''.
* ''Magazine/ShonenJump'' exists in all Shonen Jump manga that are set in anything resembling the modern world, as well as some worlds that aren't. Manga/DragonBall even goes the LiteraryAgentHypothesis route with this. (Manga/RokudenashiBlues and Manga/JojosBizarreAdventure both feature main characters using Shonen Jump as ImprovisedArmour.)
* In KindaichiCaseFiles, Hajime laments that he's no match for Tsuyoshi Domoto who was starring in a movie with Reika. Tsuyoshi Domoto was cast as Hajime in the live action version.
* In chapter 107 of ''Manga/TheWallflower'', a character mentions the actor who played Kyōhei in the live-action TV series. The best part is that instead of mentioning his name, she says that he played Kyōhei on TV, directly referencing the TV series based on the manga they exist in.
* In ''Manga/{{Holyland}}'' chapter 182, one passerby says that Masaki looks like the actor who portrayed him in the LiveActionAdaptation.
* ''Anime/GundamBuildFighters'' has an extremely odd version of this thanks to Mr. Ral, a character who looks and [[CastingGag sounds]] exactly like Ramba Ral from the original ''Anime/MobileSuitGundam''. Unlike most examples of this trope, however, the ''Gundam'' anime '''does''' exist InUniverse, and most of the characters are huge fans of it -- which makes it even more surreal that nobody comments on or even seems to notice the resemblance.