* CultClassic: Compared to later postmodern comedies like ''WesternAnimation/TheSimpsons,'' ''Series/TheKidsInTheHall'' and ''WesternAnimation/{{Animaniacs}},'' this show doesn’t quite have the same recognition -- in fact, Garry Shandling’s own ''Series/TheLarrySandersShow'' usually gets more recognized. However, this show came before all of them, and probably ''influenced'' them as well. In fact, writers from this show wound up working for ''The Simpsons,'' as well as ''Series/{{Seinfeld}},'' which deconstructed the sitcom from a different angle -- and consider how influential ''those'' shows are. As such, ''It's Garry Shandling's Show'' is still recognized by a big following of comedy fans from way back in the day, especially Garry Shandling fanatics.
* HarsherInHindsight: The first episode featuring Ruth Shandling, Garry's mom, sees Ruth have a heart attack and be taken to the hospital, after a surprise party gone wrong. In 1990, her actress, Barbara Cason, would die of a real heart attack mere weeks after the final episode aired.
* SugarWiki/HeartwarmingMoments: The season 2 finale, "Mr. Smith Goes To 'Nam." The main plot is about Leonard Smith's Vietnam flashback, but this episode is mainly known for the now-famous appearance of Creator/GildaRadner. This was her return to television after undergoing cancer treatment, and she completely and [[LargeHam shamelessly]] steals the show from Garry the moment she walks on, with the StudioAudience absolutely over the moon seeing her. If you watch Garry carefully, you can tell by his body language how protective he is of her. Also kind of a TearJerker in hindsight -- it may have been a triumphant return, but it was also Gilda's last TV appearance before her untimely passing, a mere two months after this episode aired.
* SeasonalRot: Season 4 is unquestionably the least popular season, with the additional of Garry's girlfriend Phoebe kind of throwing the dynamic off a bit, and the show seeming less inventive.
* SpiritualSuccessor:
** The first couple seasons of ''{{Series/Seinfeld}}'' played a lot like a less [[MetaFiction Metafictional]] version of this show. Not accidental, since Jerry Seinfeld was a good friend of Shandling, and Creator/LarryDavid even wrote the season 1 IGSS episode "Sarah" (credited as "Mac Brandes"). Frequent IGSS writers Tom Gammill and Max Pross also moved on to ''Seinfeld''.
** Some of the show's [[LampshadeHanging Lampshading]] spirit lives on in ''WesternAnimation/TheSimpsons'', where staff writers Al Jean and Mike Reiss ended up after its run was over (Sam Simon also had a hand in the writing).
** Shandling himself went on to create ''Series/TheLarrySandersShow'' which further explored the disconnect between the world of television and the world of reality (albeit in a less fourth-wall breaking way).
** Comedian starring in a self-titled sitcom who keeps BreakingTheFourthWall to make snarky comments to the audience... are we talking about Garry Shandling, or Creator/MirandaHart?
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