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[[caption-width-right:350:''"Buuuuuuuut whhhhhhhhhy?"'']]

'''WARNING:''' Spoilers are unmarked.
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* The cast of the ''Galaxy Quest'' television show suffering from IAmNotSpock and DudeWheresMyRespect at the beginning of the movie (despite it meant to be semi-humorous). Lamenting over how the fame they gained from the show even after its cancellation destroyed their acting careers due to them being remembered for just that show. Even during their appearances at conventions or store openings, they at first lament the way they are embraced. Gwen is treated as a MsFanservice for [[PerverseSexualLust every fanboy's perverted wet dream]] despite being a skilled actress, while [[JerkassWoobie Alexander]] gets the worst of it, as he was a respected Shakespearean actor before his unwanted StarMakingRole that limits his fans to fans of his television role (much to his dismay), and the fact that he lives in a dingy, run-down apartment, in contrast to the luxury lifestyles of his co-stars Gwen and Jason. [[SugarWiki/HeartwarmingMoments Fortunately]], [[SugarWiki/MomentOfAwesome by the end of the film, their experience at least restores their faith in their fandom and revives their acting careers]].
** Jason's InUniverse CreatorBreakdown early in the film. To see a jovial-if-arrogant star who at first seems to embrace the fandom in contrast to his less-enthusiastic co-stars, has [[DespairEventHorizon his positive outlook shattered]] after listening to the gossip of two non-fans about the negative effects of the show's fandom and how it tainted the actors' careers (which is sadly revealed to be not completely unfounded) and how poorly they talk about him behind his back, after which he ends up lashing out at his fans. He even eventually [[DrowningMySorrows drinks himself to sleep]], but shortly before falling asleep ends up watching old episodes of his show. Jason was probably thinking "IWishItWereReal" for his ''Galaxy Quest'' television fame to be really worthwhile. And eventually it does for him when he realizes how his show inspired an alien race to turn it into a real experience, thus making him as giddy as a child when his dream comes true, allowing him to gladly [[BecomingTheMask embrace his television role for real]].
** The cast's initial resentment of their remembrance is far more sad as, since the movie was inspired by the ''Franchise/StarTrek'' franchise and its fandom, it was based on [[HarsherInHindsight said show's casts' initial feelings for being remembered for just that show]].
* [[KickTheDog Quellek's death]] always starts the waterworks. This innocent alien fanboy has considered serving Alexander/Doctor Lazarus to be [[ItHasBeenAnHonor an honor]], since he has followed the latter's character's [[ProudWarriorRace culture and philosophy]] his whole life. Alexander has to watch his fan [[ItsPersonal die]] [[DiedInYourArmsTonight in his arms]] and, for the first time, delivers his hated signature line with sincerity:
-->'''Quellek:''' You'll forgive my impertinence, sir, but even though we had never before met, I've always considered you as a father to me.
-->'''Alexander:''' Quellek... ''[[BadassCreed By Grabthar's hammer... By the suns of Worvan... You shall be avenged]]''.
** Hell, it's sad enough seeing Quellek earlier in the film, meeting his genuine hero, only for his hero to turn around and snarl at him when Quellek was trying to be nice. Brings to mind many meltdowns from celebrities meeting over-enthusiastic fans, but what makes it worse is that Quellek genuinely didn't know any better, considering the entire Thermian species aren't just fans of a show; they believe they're meeting ''real-life heroes''.
** We even see how Alexander treats fans at the convention. He's barely hiding his contempt as he grabs the fans' photos and signs them.
--->'''Fan:''' By Grabthar's ham-
--->''[Alexander snatches the photo out of his hand and bluntly signs it]''
--->'''Alexander:''' ''[seething]'' Next!
* Jason being ''forced'' to explain the true nature of Earth television and fiction to the naïve Mathesar. It's like watching the slow, hard breakdown of a child discovering that there's no such thing as SantaClaus (it even hits harder as Jason's [[Creator/TimAllen actor]] played a [[Film/TheSantaClause Santa]]). Mathesar looks absolutely ''[[HeroicBSOD devastated]]''.
-->'''Mathesar:''' ''[weakly whispering]'' ...buuuut ''whyyyyyyy?''
-->'''Jason:''' ''[[[WhatHaveIBecome looking ashamed of himself]]]'' ...it's difficult to explain. On our planet, we, uh... we pretend to, uh... to entertain. ''[Mathesar can't even look at him any more]'' Mathesar, I am ''so sorry''. God, I am '''so sorry'''.
** [[MyGodWhatHaveIDone The varying looks of guilt on the other actors' faces hurt too (even Guy looks ashamed)]], despite most of them initially resenting their television roles.
** It's even painful how Jason finally manages to get through to Mathesar. As mentioned before, his species doesn't understand the concept of fiction and playing pretend (which is usually not malicious in intent), but through their interactions with people like Sarris, they now understand the concept of ''lying''. Jason tries to break it to him gently by saying that he's an actor and that they were merely pretending, but Mathesar doesn't understand, forcing Jason to use language the Thermian ''does'' understand: "We ''lied''." Mathesar visibly flinches at the word as if he'd been stabbed.
** Not to mention Mathesar's cheerful face as he tries desperately to hold on to his belief in the show, vainly attempting to counter Jason's statements about how the "ship" is actually only an inch long, and that all the inner decks and equipment are just plywood and clever special effects, while his hopeful expression immediately cracks even more with each of Jason's rebuttals. That belief, that hero worship, was pretty much all he and his people had. By the end he makes a sort of pained choking noise as he turns away from Jason, as if he's suffering a panic attack.
** This scene is gutting on many levels, but Sarris makes it even worse: his voice dripping with contempt, he cements his status as [[{{Jerkass}} an utter dick]] by demanding that Jason "Explain... as you would a ''child''." (Sarris does have a point, but he's still enjoying ''every'' second of Mathesar's humiliation.)
* The entire scene when Sarris sneaks onto the ''Protector'''s bridge and starts killing everyone off. Even if you already know Jason's going to activate the [[ResetButton Omega 13]], it's ''still'' an amazingly horrific scene.
* Both Jason's outburst at Brandon and ignoring him when they knock into each other and their communicators get mixed up can hit really hard for anyone who has looked forward to meeting a celebrity they admire, only to be severely disappointed, especially when coupled with the feeling that they somehow messed up.
** Heck, there's a reason that Creator/WilliamShatner's appearance on ''Series/SaturdayNightLive'' in 1986, the infamous "Get a life!" sketch is still considered so devastating this many years on. To actually love and enjoy something, to make it a part of your life because you appreciate and treasure it, and then to have one of the people that made it happen tell you it doesn't matter. (It helps that fans have owned it, and have learned to simultaneously enjoy the show on its own merits ''and'' acknowledge [[MST3KMantra it's just a show]] and can get ''very'' silly (and enjoy the silliness) which, in turn, allowed them to become critical of it in turn.)
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