History Recap / TheSimpsonsS19E11That90sShow

** While splitting up their possessions, Homer takes all the stuff that will be worthless in the following decades (vinyl [=LPs=], Enron stock, VHS tapes) and gives Marge all the stuff that will be successful later on ([=CDs=], Apple stock, [=DVDs=]).

** Young Homer references the ''Series/{{Seinfeld}}'' episode "The Sponge, which premiered in 1995, and Kurt Cobain is still alive when in reality he died in 1994.

* RetCon: This episode attempted to do this Marge and Homer's relationship with them first dating in the 90s rather than the 70s, [[Recap/TheSimpsonsS2E12TheWayWeWas as previously shown]].

*** The music video for ''Margerine'' features Homer playing to a crowd of crash test dummies, which may be a reference to either the [[Music/CrashTestDummies 90s band]] or the [[WesternAnimation/TheIncredibleCrashDummies advertising campaign and subsequent toyline]].

"That 90s Show" is the eleventh episode of the nineteenth season of ''WesternAnimation/TheSimpsons''. In this episode, Homer and Marge reminisce about their relationship in the 1990s (retconning their long-established 1970s background), when he was an aspiring musician and she went to college.

* ArtisticLicenseHistory: Grunge existed before UsefulNotes/TheNineties, with bands like Green River, The U-Men, and Malfunkshun pioneering the subgenre in the 1980s. The word "grunge" as applied to the sound also predates the early 90's. Creator/SubPop popularized it by using it to market Green River around 1987, and the first recorded use of the word in relation to the Seattle music scene dates to 1981. Another historical liberty is taken with the "Marvin Cobain" joke since {{Music/Nirvana}} had already formed and produced grunge music by 1990, including ''Music/{{Bleach|Album}}''.

* ComicBookTime: This episode (infamously) established Homer and Marge as dating in the mid-to-late 90's, with all cultural touchstones of the time period and changes to their personalities in general, with Homer making a garage band and Marge getting swept up by [[HippieTeacher a new age college philosophy professor]]. Previous episodes had them graduating high school in the 70's, with Marge already a GranolaGirl in the midst of second wave feminism. While NegativeContinuity has been part of the show for a long time, given the show was a major part of 90's culture and had already mocked it as a contemporary thing this also hit a ContinuitySnarl.
* ContinuityNod: While updated to reflect the 90's setting, the episode follows up on how Marge and Homer first had sex inside a windmill obstacle at a mini-gold course.

* HippieTeacher: Stefane August reflects the new age college professors that had began popping up in the 90's, many who were actual 70's counterculture hippies and would teach their classes to question everything.

** The scene where Marvin Cobain calls his cousin, Music/KurtCobain, telling them about Sadgasm's sound, is a direct parody of the scene from ''Film/BackToTheFuture'' where Music/ChuckBerry's cousin Marvin calls Chuck to tell him about Marty [=McFly=]'s new sound.

* ExpyCoexistence: Homer is a parody of Music/KurtCobain. To make sure we get the joke (and to make a ShoutOut to a similar scene in ''Film/BackToTheFuture''), while watching Sadgasm play, a guy makes a phone call, saying "Kurt? This is your cousin Marvin, Marvin Cobain. I've found that sound you were looking for."

*** The music video for ''Margerine'' features Homer playing to a crowd of crash test dummies, which may be a reference to either the [[Music/HughGrantCrashTestDummies 90s band]] or the [[Advertising/The CrashDummies advertising campaign and subsequent toyline]].

* ArtisticLicenseHistory: Grunge existed before UsefulNotes/TheNineties, with bands like Green River, The U-Men, and Malfunkshun pioneering the subgenre in the 1980s. The word "grunge" as applied to the sound also predates the early 90's. Creator/SubPop popularized it by using it to market Green River around 1987, and the first recorded use of the word in relation to the Seattle music scene dates to 1981. Another historical liberty is taken with the "Marvin Cobain" joke since {{Music/Nirvana}} had already formed and produced grunge music by 1990, including ''Music/BleachAlbum''.

* ExpyCoexistence: Homer is a parody of Music/KurtCobain. To make sure we get the joke, some record company guy, while watching Sadgasm play, makes a phone call. "Kurt? I've found your sound, Kurt."

* ChastityCouple: Homer and Marge lived together, sleeping on separate air mattresses, before they ever had sex, as [[LetsWaitAWhile Marge was waiting]] either for marriage or until she got extremely drunk (as previously established, it was the second thing).

* FromRoommatesToRomance: Homer and Marge lived together, sleeping on separate air mattresses, before they ever had sex, as [[LetsWaitAWhile Marge was waiting]] either for marriage or until she got extremely drunk (as previously established, it was the second thing).

* BeCarefulWhatYouWishFor: Frustrated with Marge spending a lot of time with her professor, Homer tells her that she should go with him. Little did he know that Stefane was within earshot and agrees to take Marge.

* RetCon: This episode attempted to do this Marge and Homer's relationship with them first dating in the 90s rather than the 70s, [[Recap/TheSimpsonsS2E12TheWayWeWas as previously shown]]. It wasn't well-received, and the old backstory is still depicted in later episodes (despite becoming increasingly outdated).
** [[Recap/TheSimpsonsS33E1TheStarOfTheBackstage "The Star Of The Backstage"]] went on to retcon Marge and Homer's relationship again, making them high school sweethearts and theater troupers during the '90s.

* SequelEpisode: Of a sort to "[[Recap/TheSimpsonsS2E12TheWayWeWas The Way We Was]]," a second season episode with a similar premise of Marge and Homer sharing a story before they have kids (due to something else giving the family a lot of time on their hands). The significant amount of {{Continuity Snarl}}s due to the ComicBookTime notwithstanding (Marge has long straight hair based on 70's styles in the first episode, here she has a short feathered style based on "the Rachel" from ''Series/{{Friends}}'').

* VoodooShark: "The Way We Was" and "I Married Marge" are the first two flashback episodes, the former taking place in 1974 and the latter, which supposedly takes place immediately after, taking place in 1980. This episode is supposed to fill the space between these episodes and therefore would ideally take place in the 70's. Guess where it actually ''does'' take place.