Organized in the order of appearance. Citation(s) would be appreciated.

* Lots of references to SHAFT works:
** Kumeta mades plenty of references to [[Anime/PuellaMagiMadokaMagica Madoka]].
*** Helped by FridgeBrilliance since despair is a theme in both series.
* Nozomu has a Death Note himself. He uses it to keep track of people he wants to die with him.
* A box of doujin labeled ''Manga/{{Genshiken}}'' appears in the classroom one day, and the table behind Itoshiki-sensei at the Comic Convention turns out to be staffed by Genshiken members as well. In ''Goku'' episode one, the Halloween cosplayers include one dressed as [[Anime/KujibikiUnbalance Ritsuko Kubel Kettenkrad]]. And the Tanabata chapter of the manga includes a ''tanzaku'' from someone wishing to get into "Shio University" (''Genshiken'''s version of Chuo University).
* ''Anime/TengenToppaGurrenLagann'': Has a bunch of references in addition to blackboard gags. These include two separate scenes wherein Nozomu is punched in the face in the exact same manner as [[spoiler:Simon punches Rossiu]], complete with ArtShift, PunchedAcrossTheRoom, and the exact same frame-by-frame animations... until Nozomu unexpectedly crashes into a fence headfirst. ItMakesSenseInContext; ''CLAMP'', the studio collective who produced this anime, did much of the cleanup animation work on ''Gurren Lagann''. Harumi is seen with Kamina x Simon doujinshi at least twice; once at Zetsubou Sensei's funeral.
* One episode briefly shows the class with desks like from the second ''Manga/MahouSenseiNegima'' anime.
** Another has a set of dolls who bear strong resemblances to various members of Negi's class.
* A Psyche-Lock from ''Franchise/AceAttorney'' briefly appears.
** Later on, a murder mystery spells out the names of important locations with ''Ace Attorney'''s trademark clicking sound.
* As for ''Anime/NeonGenesisEvangelion'' references, we have Abiru's bandages, that are a mirror flip of Rei's look at her introduction. Nami's birthday party gets a Congratulations scene, like the one Shiji gets in the last episode of the T.V series.
* Harumi poses as [[Anime/CodeGeass Lelouch]].
* The opening of the second season is a reference to the Tokyo Grand Guignol's ''Manga/LitchiHikariClub'' play.

[[folder:Manga Only]]
* In the manga, Itoshiki-sensei seems to be a fan of Creator/EdwardGorey.
* ''Manga/DeathNote'': Light Yagami appears briefly for one page, followed by a confused Itoshiki.
* On the final page of Chapter 15, there's a {{yonkoma}} comic strip that's an obvious AffectionateParody of ''Manga/SazaeSan''.
* In Chapter 17 of the manga, a wanted poster for Kira (with a question mark in place of the mugshot) appears.
* There's a chapter in the manga about people saying things they'd never say as jokes ([[OOCIsSeriousBusiness but because it's out of character, it gets taken seriously]]) -- included is Soichiro saying "I'm Kira".
* The class discusses how Nozomu's "confession training" would ruin manga, leading to several {{imagine spot}}s.
-->'''Man''': Just who is Ki--\\
'''Light''': I did it.
* In one of the final episodes of the manga, Nozomu is lying in a coffin reading CaptainErsatz versions of the ''Anime/{{Doraemon}}'', ''Manga/DeathNote'' and ''Anime/PuellaMagiMadokaMagica'' manga.
* Chapter 192 (Combitems), an unnamed character kidnaps Nozomu and chains him in a secret room with random items in a recreation of ''{{Franchise/Saw}}'' so she could [[ItMakesSenseInContext figure out what he was trying to do with the random items he bought]].
* In chapter 162, Harumi imagines [[Manga/{{Naruto}} Naruto, Kakashi, and Sasuke]] after hearing about a teacher attacking a defending.

[[folder:Shaft's Black Board References]]
* The blackboards in Itoshiki's classroom regularly sport various messages, quotes, and doodles that reference other bits of pop culture:
** ''Anime/TengenToppaGurrenLagann'': "Believe in those who believe in you."
*** "Use your ({{Moe}}) drill to break through the heavens!"
*** This doubles up as a reference to ''Manga/LuckyStar'''s UsefulNotes/NintendoDS game: ''Lucky Star: Moe Drill''.
** ''Manga/AzumangaDaioh'': "Hang in there, Tomo-chan"
** ''Manga/OnePiece'': "[[{{Yaoi}} Zoro x San]]"
** ''Anime/CodeGeass'': "ZEROOOOO!" and "I am not Orange!"
** "The monk who leapt through time" is obviously a reference to ''Anime/TheGirlWhoLeaptThroughTime''.
** [[Manga/{{Bokurano}} UNINSTALL]].
** In one of the first episodes: [[WesternAnimation/SouthPark "Screw you guys, I'm going home!"]]

!!!Episode 2
* When Itoshiki sensei see photos of Matoi and her ex-boyfriends, in one of them she is wearing a cosplay of [[Anime/DiGiCharat Dejiko]] and her boyfriend is seen with a [[Manga/LuckyStar Konata]] T-Shirt
!!!Episode 3
* ''Anime/DragonBallZ'': Matoi and Nozomu perform the fusion dance halfway through the Kaere introduction.
* ''Manga/DeathNote'' : While the class is discussing the optimal angle for viewing fireworks, Sensei colapses to the ground, briefly seeing Light Yagami (a direct shout-out to the moment of [[spoiler:L's death]]). Pan back to the students - on the blackboard behind them is written "Death NEET," an obvious reference and pun.
!!!Episode 5
* The bath house story opens with a parody of the Creator/StudioGhibli title card, and has various other references to ''Anime/SpiritedAway''.
** Also in this HotSpringsEpisode, [[Manga/LuckyStar Unlucky Channel]] can be seen behind
!!!Episode 6
* In the scene where Sensei closes himself in a storage space, he notes things that are found in storage spaces. Among the people referred to are the eponymous character from Osamu Tezuka's manga Ayako and Fujiwara no Sai from ''Manga/HikaruNoGo''.
!!!Episode 8
* A picture of Ritsuka and Soubi from ''Manga/{{Loveless}}'' appears whilst the class is talking about criticism training.
* Around the min. 7:35, [[Manga/UruseiYatsura Lum]] can be seen sitting on the moon.
* Nozomu is attacked while in the shower by Creator/BruceLee, [[Franchise/ANightmareOnElmStreet Freddy Krueger]], and what appears to be a [[Creator/AkiraKurosawa typical Kurosawa character]], along with many other characters, in the same style as the famous shower scene from ''Film/{{Psycho}}''.
!!!Episode 9
* During Majiru's introduction as Nozomu's 'son', Matoi goes into a rage and wields what appears to be [[Manga/InuYasha the Flaming Tessaiga]].
* When Nozomu is listing famous mistakes, [[Anime/LegendOfGalacticHeroes Reinhard and Reuenthal]] is on the list.
!!!Episode 12
* The practice for "soft" landing is done on an arcade-like machine. On the side in one scene, it reads "Afterburner" from the game series.
* During Ai Kaga's introduction sequence, we can see a random moment where she's sleeping [[ComicStrip/{{Peanuts}} on top of a red dog house, complete with Woodstock (censored by Maedax's face) flying around]]. In that same introduction sequence, Nozomu, Ai, Chiri and Kafuka are having a snack at a "Ntarbucks Coffee".
* A reference to ''The iDOLM@STER'' is made with a girl that looks incredibly similar to Yayoi and a man that claims to produce video game idols.
* Harumi buys a doujinshi whose contents look suspiciously similar to Kuso Miso Technique.
* In the beginning is a scene lifted directly from Jean-Luc Godard's "Pierrot Le Fou": Nozumo is seen with dynamite wrapped around his head, and following that is a scene where you see the explosion from far away on a cliff.

[[folder:(Zoku) Sayonara Zetsubou Sensei]]
!!!Episode 1
* The prologue starts out as a bizarre story about cults, but then turns into a parody of ''Series/KamenRider''.
* The episode mentions that, at one point, Itoshiki was kidnapped by pirates. We see him on a deck, with the silhouettes of the pirates around him--[[Manga/OnePiece one of them wearing three swords at his side]]...

!!!Episode 3
* Around 15:30 there is a brief note that reads "As of today, you have been assigned to [[VisualNovel/HigurashiWhenTheyCry Hinamizawa]]".
** Also Hinamizawa is considered a "double-speak" for massacre.
* In the first minute or so, when our resident YaoiFangirl is trying to draw her otp,if you pay attention, she has a poster of [[Anime/CodeGeass Lelouch and Suzaku]] [[HoYay holding each other and staring into another's eyes]].
** Later in the first part, you can see pictures of [[Anime/PaniPoniDash Mesousa and the cat from the Moe café]] on Fujiyoshi's pencil holders.
!!!Episode 4
* ''Anime/MobileFighterGGundam'', ''Ultraman'', ''Franchise/StarWars'', and ''Anime/NeonGenesisEvangelion'' get referenced in [[AlienInvasion a]] [[AttackOfThe50FootWhatever big]] [[CallingYourAttacks way]]:
** The mask that makes Chiri grow giant is an Ultraman mask. She dispatches the mecha in a shot for shot parallel to Asuka mutilating the MP Eva's. [[BandageBabe Abiru]] even hangs a [[LampshadeHanging lampshade on it]]. "Why is she speaking in German?" The last kill is a ''Anime/MobileFighterGGundam'' reference (though it's called "Bakunetsu Gold Finger," she grasps the head so it's closer to the Shining Finger). Finally, she blows up the [[Franchise/StarWars Alien spaceship]] with Ultraman's cross laser thing, stock footage and all.
** That's not all : The way Chiri grows huge is almost exactly the same way Link does when he dons the Giant's Mask in ''VideoGame/TheLegendOfZeldaMajorasMask''. Coincidentally, the mask in ''Zoku'' also happens to look a bit like the Giant's Mask.
* ''Anime/WhisperOfTheHeart'': Episode 4 of Zoku, Seiji Amasawa's name appears on the library card.
* ''Manga/LuckyStar'': "You're purposely talking about stuff nobody cares about, aren't you? Like ''how to eat a chocolate cornet!'' Nobody gives a damn!"
!!!Episode 5
* There is a brief picture of a parody of ''Anime/EurekaSeven'', showing a mock Renton and [=typeZERO=].
* [[Anime/PaniPoniDash Mesousa, Lord Cat and the giant salamander]] appear briefly in a shopping bag.
!!!Episode 7
* ''Anime/TengenToppaGurrenLagann'' gets one in the MagicalGirl parody, when Nozomu's defeat mirrors [[spoiler:Lordgenome's death in the finale]].
* At the beginning, Nozomu dons a mask nearly identical to Hei's Reaper mask in ''Anime/DarkerThanBlack''.
* ''Manga/LuckyStar'': Bob Ross painting Konata.
* During the Magical Girl opening, Meru is writing out something on her cell phone. The message? [[KonamiCode Up up, down down, left right left right B A]].
** Nozomu's defeat at the end of the sequence is a reference to the end of the ''Manga/ShamanKing'' opening credits.
!!!Episode 8
* Maria, Abiru, and Chiri are wearing the same suits as the main characters of ''Manga/CatsEye''.
!!!Episode 9
* ''Anime/GhostInTheShell'' gets a shout-out when Maria jumps out of the classroom window, holds her hand up as she falls, and vanishes.
* ''Manga/DoctorSlump'': Maria mentions that the Prime Minister riding on a "space-age Segway" doesn't look any different than Dr. Mashirito. She even brings out a blurred picture of him!
!!!Episode 10
* This episode features [[VisualNovel/HigurashiWhenTheyCry Rena's cleaver]].
!!!Episode 11
* The detective parody makes reference to Kosuke Kindaichi, Japan's own Literature/SherlockHolmes with a dandruff problem. In the Blu-Ray special, which features Nozomu as a detective again, he laments that he's not cut out to be a detective because [[Manga/KindaichiCaseFiles he doesn't have a detective for a grandfather]] or is a [[Manga/DetectiveConan kid with an adult's brain]].
* Each of the murders is a ShoutOut to another anime series. One features Kaere/Kaede [[Anime/NeonGenesisEvangelion impaled on a cross with the Lance of Longinus]].
** Another in that episode shows a old lady passing videos of ''[[Anime/UchuuSenkanYamato Space Battleship Yamato]]'', even with the OncePerEpisode damage to the third bridge.
* One to ''Anime/MobileSuitGundam'': A Tanzaku tied a wish to a tree. Its wish? "To become a High Mobility Model!"
!!!Episode 13
* One of the people auditioning for the voice of Meru is [[Music/{{Vocaloid}} Hatsune Miku]].

[[folder: Zan Sayonara Zetsubou Sensei]]
!!!Episode 9
* After the girls begin giving each other face massages, Nozomu notes (in the sarcastic 3rd person) "Sensei, it looks like you're gradually loving girls less and less". Camera pans to [[YaoiFangirl Fujiyoshi]] [[ with a rape smile, who is reading a manga with a picture of Nozomu and Araragi Koyomi]] from ''LightNovel/{{Bakemonogatari}}'' on the front cover. The two are ''kissing passionately''.
** Immediately before this, the blackboard reads "No, I'm Koyomi".
** It's worth noting that both Nozomu and Koyomi are voiced by Creator/HiroshiKamiya, making this also an ActorAllusion.