* The look on Daniels face in "Children of the Gods", when he realizes that Sha're has been taken as a host.
** Daniel saying goodbye to the people of Abydos, and telling them to bury the gate forever. He's crying the entire time and you realise that these people and this community have become his family, and he would rather be alone again than let something happen to them.
* Subverted in the third episode -- Charles Kawalsky, who the viewer would have thought was going to be [[DecoyProtagonist a major character]], is in great pain in a hospital bed. The music takes a distinctly mournful tone. Jack, with the saddest, most genuine look of sorrow on his face asks him, "If you don't make it... [[spoiler: can I have your stereo?]]" Kawalsky, and the viewer, choke out laughter.
** Then the actual death of Kawalsky, a character who ''survived'' the film dies in such a heart-wrenchingly senseless way.
** Jack repeatedly calling Kawalsky by [[YouCalledMeXItMustBeSerious his first name]] throughout the episode, leading the audience to realise just who Jack named his dead son after.
* The ending of "Fire and Water", where Nem uses his memory machine on Daniel Jackson to find out the fate of Omoroca (his mate) from ancient Babylonian texts.
-->'''Daniel:''' And in that place there was Omoroca, a woman who came forth from the heavenly egg, who walked among men by day. But at night she would retreat to the sea to sleep -- one of the beings called [[FishPeople Ohnes]]. The [[AbusivePrecursors god]] [[PuppeteerParasite Belus]] came down onto Babylon unto the place of Omoroca... [[spoiler:and cut the woman asunder!]]"
** Finding out that a loved one has died is never easy, but finding out after waiting [[TimeAbyss four thousand years hoping for their return]]...
** This scene is one of the rare moments where a BigNo ''works''.
** Daniel Jackson's funeral.
* Basically half of the entire episode "Cold Lazarus" would qualify, where we see how much the lives of Jack and his ex-wife were impacted by their son's death.
** There's a really powerful moment where the crystal-energy doppelganger visit's Charlie's room and relives Jack's memory of his son's death, and comes out the other end a sobbing, shaking wreck. Especially potent when later on, the crystal Jack says that [[StarfishAliens physical death doesn't have the same meaning to its kind]], so it's experiencing a grief that it never even comprehended before.
** When the doppelganger reveals that its entire mission was to help Jack, and explains that it deemed his emotional pain of losing Charlie to be greater than any physical injury he had. It explains that its goal was to go and get Charlie and bring him back to Jack to make him better, which is heartbreakingly childlike logic. That revelation in an of itself is awful, but then the doppelganger [[spoiler: turns into Charlie to at least try and fulfil its mission and give Jack one last moment with him. The look on his face says it all]].
* The season 1 episode, "Torment of Tantalus". Earnest, having been alone on a world for 50 years with no human contact, hugs Daniel and says, tearfully, "About time."
* Teal'c accepting that he should be executed in ''Cor-Ai.''
** During his conversation with Jack about his guilt, he spends the entire time looking down, lip quivering, near tears. This is a man who rarely, if ever, shows any form of emotion.
* Sam gets one in "Singularity", when she is ordered to leave Cassandra in the reactor silo, since the Goa'uld bomb in her chest is about to go off.
-->'''Cassandra:''' You promised you wouldn't leave me. You promised.\\
'''Sam:''' I know... but I ''have'' to. Do you understand? ''(choking back tears)'' Just remember, you're very brave...
** The look on both their faces as Sam closes the blast door, Sam crying her heart out on her way back up the elevator, and then turning the elevator around and going back to wait out the timer with Cassandra is one uninterrupted seven-minute stretch of tear-jerking.
** Earlier in that same episode Cassandra sees the team tagging the dead and takes one, and is later shown putting the tag on herself essentially marking herself as dead.
* The end of "Tin Man", when androids who, essentially, have the minds and identities of SG-1, agree to live in exile.
* "There But for the Grace of God", especially the part when General!O'Neill is killed. He just kinda stands there in a daze as it happens.
* Skaara's brief return to consciousness after a year as host to a Goa'uld in the first season finale is pretty painful. "O'Neill, are you still my friend?" Sob.
* Daniel being left behind at the end of season one (although Jack's face just made it worse; Daniel seemed pretty calm about the whole thing), etc.
* The scene with Daniels parents in "The Gamekeeper", absolutely every moment.
* All of Daniels interactions with [[spoiler: Sha're in secrets.]] He spends a good amount of time being upset and confused by the whole situation and its hard to see [[spoiler: him and Sha're dancing around each other, unsure of what to do]]. Then of course he realises he may only have a few days[[spoiler: with her,]] and every moment between them becomes this as they try and find a way to [[spoiler: protect her and get her back to earth]].
** And then they fail, and Daniel has to watch [[spoiler: as Sha're is overtaken by Amaunet again]].
** Its also heavily implied by the end of the episode that [[spoiler: Sha're is still in there, fighting against Amaunet, as she makes eye contact with Daniel hiding behind a pillar, but doesn't give his position away, protecting him from Apophis]]. And from what we've seen of hosts who manage to regain their selves, thats a fate worse than death.
* In "A Matter of Time", when Jack realizes that the thing Henry Boyd's team are so afraid of on [=P3W-451=] is a ''Black Hole''. Made even worse because Jack was the one who recommended him to lead SG-10 and it was his ''first'' mission through the Gate. The look of guilt on Jack's face says it all.
** Then his furious WhatTheHellHero to Carter, when she becomes almost giddy at the prospect of being the first to observe the effects of spaghettification, pointing out all they will see is good men dying horribly. Cut to the MALP, which is now showing Henry Boyd frozen in time, screaming in terror.
** Jack refusing to forgive Cromwell for leaving him for dead during the Gulf War, which meant he spent some time in an Iraqi prison. [[spoiler: Then shortly afterwards, Cromwell's safety-line snaps and he gets pulled through the gate.]]
* "Serpent's Song" has a gutwrenchingly beautiful moment where Daniel is comforting the poor, thousands-of-years-old scribe who was Apophis' host by telling him that he will give him the final rites and that he will see his wife again after he dies.
** Even worse that he didn't die and had to remain a prisoner in his own body for two more years. Imagine it - [[HopeSpot thinking your millennia of torment is about to end as you slowly lose consciousness]], [[AndIMustScream then waking up again to find that your are still a prisoner in your own body]].
** The moment when Apophis' host first emerges - presumably for the first time in ''millennia'' - offers a truly gutwrenching look at how [[AndIMustScream absolutely horrific it is to be a Goa'uld host]].
* "Show and Tell", when Re'tu Charlie asks if Jack can be his dad... sniff.
** Him asking to be called Charlie in the first place.
** In fact that entire initial meeting from the moment the kid first mentions him having a son looks almost physically painful for Jack.
** Then poor Re'tu Charlie has a front row seat to his "mothers" murder.
* Hammond being genuinely upset, to the point of his voice getting a choked up, when Ma'chello suggest that they [[spoiler: effectively sacrifice Daniel for his use. Seeing as Daniel is trapped in Ma'chello's old dying body, this is would be a death sentence for Daniel]]. Its always clear how much he cares about Jack, but this is the first time we really get to see his affection spreading to the rest of the team.
* More of Daniel: when he is temporarily schizophrenic in the episode "Legacy", the team comes and visits him while he's institutionalized. He looks up at them and tearfully whispers, "They took my glasses..."
* Quite a lot of 'Forever in a Day"
** Sha're's death at the hands of Teal'c is uber heart-wrenching to watch.
** Daniel recounting how Sha're was fascinated by his pen when he first arrived on Abydos has Carter in tears. Its clear just how much he loved her.
** Him explaining his reasons for leaving to Jack as he packs his office. Specifically when he says that every time he stepped through the gate, he always wondered if this world would be the one he found Sha're on, and now that part of him won't exist anymore, that hope. It will just be another place, and he can't do it anymore. And then he starts to cry. He manages to get it under control, but my god its one of the most painful moments to watch.
** Even though [[spoiler: his team members are only creations, figments of his imagination, they still behave according to how Daniel would reasonably expect them to. So seeing both how they react, and how Daniel knows they would treat him in this very real scenario is both heartwarming and terribly sad]].
** Despite the fact [[spoiler: its all in his head]] this is still Daniels process of moving through his grief.
** Seeing what he would have done [[spoiler: without Sha're's intervention- quitting the SGC, refusing to forgive Teal'c, cutting of communication with his team- is awful when you realise that that would have been his fate without her sending her last message]].
** His anger at Teal'c, while justified, is horrible to see. Its clear just how betrayed he feels
* When Jack is under the influence of Apophis' hallucinogen and he sees Charlie.
* Seeing the result of Merrin's 'averium' on the population of Orban is a good version of this. She went through with her sacrifice, and as a result, when SG-1 returns, they find corridors full of children laughing and playing, finally having learned fun. Even the adults are now seen enjoying their lives, the previously stoic Kalan having drawn a 'representation of himself' for the team. And all because one one little girl.
** But of course because of this, the previously articulate and intelligent Merrin has been reduced to a mute, infant like state, scribbling on the walls.
* Daniel having to make the decision to [[spoiler: leave Sha're's son in the hands of Oma]]. It meant having to come to terms with the fact that he wasn't able to completely fulfil [[spoiler: Sha're's dying wish for him to protect 'the boy']]. It's also him having to say goodbye to that last piece of his wife, and a child who was, in a way, his son too.
* Even though they got out, Daniel blowing the sub that Jack and Teal'c were on in "Small Victories". Then, inversely, Jack blowing up a ship that he thought Daniel was on in "Scorched Earth".
* The end of "Window of Opportunity". When they are trying to get the guy to shut off the machine, the man behind it all says that he wants it so he can see his wife again, believing that Jack could ''never'' know that kind of pain. Cue Jack's patience finally evaporating;
-->'''O'Neill:''' I lost my '''son!''' Believe me, '''I know!''' And as much as I... I could never live through that again.
* The end of "Divide and Conquer", [[spoiler: Poor Martuf...]]
* Loren's story from 'The Light' is pretty awful. Poor kid.
** What about Jack walking in on Daniel about to [[spoiler: jump off his balcony]], complete with him tearfully saying that it 'doesn't mean anything'. Its revealed in the next scene of course that this is due to some weekly alien shenanigans, but because of all the awful stuff thats happened to him, it is genuinely believable for a moment [[spoiler: that Daniel might actually jump.]]
*** When he 'wakes up' from his little trance and realises where he is, he sounds so scared.
* Daniel being unable to talk about what happened to Sha're in 'Absolute Power'.
** His held gaze with [[spoiler: Shifu]] at the end. The kid was [[spoiler: sort of his son, and protecting him was Sha're's dying wish]], so its understandably hard on Daniel.
* General Hammond's conversation with Jack about Teal'c's fate in 'Threshold'. Due to his involvement with the Stargate program, he would have to be put in a maximum security prison in solitary confinement for the remainder of his life, which, given his reliance on the infant Goa'ould, will likely only be another 4 or 5 years. After that, he will die in agonising pain. Hammond keeps up his stoic exterior while explaining this, but he admits that he can't do that to Teal'c.
--> '''Hammond''': I won't do that to him Jack
** Hammond's reluctance to enter the room while Teal'c is being deprogrammed. It clearly really hurts him to see a man that he trusts so much and has so much faith in reduced to such a state. And once its over, he immediately runs into the room, on the edge of crying.
* Daniel yelling at Jack for killing Reese. Its sad as Daniel really did seem to care for Reese and is mourning her, and it's also sad seeing Daniel and Jack so angry at each other. Specifically Daniel calling Jack a stupid son of a bitch. He has only shown that much contempt for a Goa'ould.
* [[FirstLawOfResurrection Even if you know he gets better]], watching the episode where [[spoiler: Daniel dies of radiation poisoning]] is still incredibly heart-rending.
** This episode was a real soul-crusher for the fans.
* Sam wondering around Daniels empty office in Revelations.
** Hammond trying to console Sam about Daniels uncertain fate by telling her about his friend who got shot down in Vietnam, managed to pull his shoot, but was never found.
** In sort of a happy way, that last breeze going past the gang as they all leave for the night. [[spoiler: Daniel's subtle way of telling them he may be dead, but he's not gone]].
* Calling the first hyper space capable earth fighter jet 'Abydos 1'.
* Jack and Daniel's conversation in "Abyss" while Jack was being tortured by Ba'al and Daniel was dead. It alternates between hilarious and heartbreaking.
** Special mention goes to Jack yelling at Daniel that if their positions were reversed he would break Daniel out in a heartbeat. And then he would make Ba'al suffer. When Daniel says he wouldn't because he's a better man than that, Jack immediately screams at him 'That's where you're wrong!", Once again hammering home the point that when it comes to his little adopted family, there isn't much he wouldn't do. Even if they are already gone.
** At one point while being tortured, Jack's reduced to simply whispering Daniels name, begging him to end it.
** After the scene mentioned above, when Jack is back in the prison, he very quietly asks for Daniel, and then says so sadly 'you were gone'. It almost feels like he's talking about life in general, rather than this specific situation, with his little brother figure Daniel having gone, and Jack being a bit lost without him.
* How about the look on Fifth Replicator's face end of "Unnatural Selection" when he realizes Carter and the others are leaving without him.
* Teal'c comforting Sam in the locker room when Jack is MIA.
* Daniel promising Teal'c that when he wakes up everything will be fine.
* In "Fragile Balance", when you realize that Jack's clone is roughly the same age that Charlie ''would'' have been...
* The seventh-season episode "Heroes".
* Poor little Keenan in 'Lifeboats' telling Janet about his Mum.
* The death of [[spoiler:Doctor Janet Fraiser]], that is all.
** Sam's general emotional state in part 2 is pretty hard to watch. Teal'c coming to her nearly crying, having written a eulogy also qualifies, and Daniels protectiveness over the tape that shows the event are all big hits emotionally.
** Also Daniel recounting the story of how he died, and how dedicated Janet was.
** General Hammond's protectiveness during this whole time period, but especially him telling Sam that although you're supposed to care for all your officers equally, you can't help but care for some of them more. Its clear that he means SG-1 and [[spoiler: Janet]] are officers he's come to care for more like family, and that [[spoiler: the loss of Janet is hitting him particularly hard]].
** The second half of the "Heroes" two-parter. The whole episode revolves around the death of one character. The audience is led to believe it's one character. At the end, it is shown, in startlingly undramatic and completely heart-shattering frankness, that it was someone else.
*** It really is the manner in which we find out, in the very brutal and realistic lens of a battlefield camera, without the gloss of tv and hollywood.
** The in-show tribute video at the end actually did bring tears to General Hammond's actor, a former Vietnam-era army sergeant. And for the regular viewers... [[spoiler:fan-favorite regular Dr. Fraiser is killed instantly while treating a wounded airman during an offworld firefight. Samantha Carter delivers her euology.]]
-->[[spoiler: We often talk about those that give their lives in the service of their country. And while Janet Frasier did just that, that's not what her life was about. The following are the names of the men and women who did not die in service, but who are in fact alive today because of Janet. Major Samantha Carter, Dr. Daniel Jackson, Colonel Jack O'Neill, Teal'c, Sergeant Connie Smith,Major Ian Hules, Senior Airman Simon Wells. . .]]
** And the end of the episode when [[spoiler: Simon Wells, the airman that Dr Frazier died saving, is revealed to have named his newborn daughter Janet after her.]]
* The beginning of season 7, when Daniel returns from the dead and doesn't remember his team. There's this moment where he just sort of shrugs, says they don't look familiar, and walks past them. The look on Jack's face is plainly heartbreaking.
** Later in the same episode, Daniels jubilation at being able to remember Sha're's name is abruptly bought to an end when he relearns that she is dead. He looks down at the photo of her he's carrying and says, voice breaking slightly, 'I loved her very much'. He then places the photo face down next to him and changes the subject.
* "Lost City" closing with Jack frozen in the Ancient outpost.
* "Avatar" can be brutal to watch, as Teal'c suffers slow mental exhaustion after becoming trapped in a computer simulation that [[TheComputerIsACheatingBastard will not let him win]]. He "dies" over and over again, no matter what he tries, and finally suffers a HeroicBSOD when he realizes the game won't even let him quit. It gets worse when it's revealed why he can't beat the simulation: [[spoiler: the program's not malfunctioning. It's learning from Teal'c's personality and experiences, and tailoring the simulation to fit them. The reason Teal'c can't beat the Goa'uld in the game is because subconsciously he still believes that he'll never be able to beat the Goa'uld in real life.]]
** That, and watching the virtual SGC personnel die over and over again. It's true they aren't the real people, but still...
* When Sam's dad Jacob [[spoiler: died for real]].
* The [[spoiler: destruction of the ''Prometheus'']] in "Ethon", complete with [[spoiler:Pendergast's HeroicSacrifice]].
** The worst part is that after ''years'' of service, and having saved at least ''two'' galaxies from annihilation. [[spoiler: Prometheus is lost and the civilization it was destroyed trying to save wiped themselves out hours later.]] Talk about a SenselessSacrifice...
* Orlin at the season 9 double episode "The Fourth Horseman". [[NoGoodDeedGoesUnpunished He returns to save the Earth from the Ori plague]], and at the end of it, he is shown [[spoiler: having lost almost all memories of what he ever was]].
** [[spoiler:Landry's death in the time dilation field]] and Mitchell standing on the bridge.
** In the same episode, Vala crying during that conversation with Daniel, even though it ended well for both of them.
** Thor at the beginning. His entire race is about to die, and his one regret is his inability to help the humans more than he already has. Selfless to the end.
** When Sam says goodbye to Thor for the last time, [[spoiler: just before the Asgard hasten their impending extinction by committing mass suicide]].