History Heartwarming / ER

* Several months after the stabbing, Carter develops an addiction to painkillers, and in the Season 6 finale, Mark, Benton, Kerry, Jing-Mei, and Anspaugh try to get him to go to a rehab center in Atlanta. Words are had, Carter quits and angrily punches Benton... then dissolves into tears, [[MyGodWhatHaveIDone horrified and ashamed]]. Benton hugs him, in that [[GrumpyBear faintly irritated Benton way he has]], and the next time we see them, they're side-by-side on the plane to Georgia.

* "The Book of Abby": As Abby is packing her things, she pulls the nametag off her locker to keep as a souvenir. Haleh catches her at it and leads her to a storage closet whose wall is covered with tags from doctors and nurses who used to work at County General. Abby adds both her tag and Luka's to the wall before leaving Chicago with him. Doubles as a tearjerker.

* The wall of nametags in "The Book of Abby". Doubles as a tearjerker.

* In "If Not Now", Abby discovers she's unexpectedly pregnant and wrestles with the possibility of getting an abortion. Luka, despite desperately wanting a child himself, insists that it's ultimately Abby's choice and whatever her decision, he'll support.

** Despite appearing to be in love with Elizabeth, Romano gently comforts and supports her when she's devastated over Mark's cancer returning. He is also the one who helps her decide to go back to Mark at that point.

-->'''Abby:''' ''(to Luka)'' Do you know that I love you more than I could ever explain? ''(pause, then Luka kisses and embraces her)''

* In "All in the Family", after Carter and Lucy have been stabbed by a schizophrenic patient and the hospital staff are scrambling to save them, Benton--who had been absent up till this point--[[PapaWolf comes bounding down the stairs from Surgery in search of Carter]], bellowing "Is he conscious? ''Is he conscious?!''", [[https://youtu.be/9x7Ik-9ihBw completely heedless of anyone or anything standing in his way]]. Later, when he tells Carter that he will be in charge of the latter's emergency surgery, Carter gives him a watery but genuine smile and says, "I'm glad it's you."

* Jeanie anticipated being shunned and avoided by her coworkers after revealing her HIV status to them; instead she has their continued respect, support and friendship. Her husband Al, having just broken up with her, drops by the ER shortly before Christmas with some of her things, including a tree topper that they'd bought for their first Christmas together. Jeanie puts it on the tree in the ER, prompting Randy to comment, "You should put it on your family tree." Jeanie's response? "[[TrueCompanions I just did]]."

* The ending of ''The Domino Heart'' sees [[HurtingHero Lucy]] outside alone in the winter cold [[HeroicBSOD pondering sad thoughts]] after failing to save her heart recipient patient, despite all her best efforts. [[NiceGuy Luka]] arrives and finds her outside after his shift is over and [[YouMustBeCold drapes her in his coat to keep her warm]], offers to take her to the circus he has tickets for and expresses his concern for her, listening to her finally open up about herself and her wants and fears. In the end he manages to cheer Lucy up again, complete with some HeldGaze between them, before deciding to stay at the hospital with her instead of going to the circus, and teaching her how to perform a medical procedure on a newly arrived patient. Crosses over with TearJerker, as Lucy only lives for another couple episodes, thus nothing comes of the seeming ShipTease.
* In "All in the Family", after Carter and Lucy have been stabbed by a schizophrenic patient and the hospital staff are scrambling to save them, Benton--who had been absent up till this point--[[PapaWolf comes bounding down the stairs from surgery in search of Carter]], bellowing "Is he conscious? ''Is he conscious?!''", [[https://youtu.be/9x7Ik-9ihBw completely heedless of anyone or anything standing in his way]]. Later, when he tells Carter that he will be in charge of the latter's emergency surgery, Carter gives him a watery but genuine smile and says, "I'm glad it's you."
** Malucci noticing and quietly showing his concern for how shaken [[HeroicBSOD Kerry is]] while they are trying to operate on Lucy, despite their antagonistic relationship.
-->'''Malucci:''' "You ok, Chief?"\\
'''Kerry:''' "I got it."

* [[PapaWolf Malucci]] getting a little girl to talk about having been sexually abused by her father, and being there reading ''Green Eggs and Ham'' with her as she is being examined by Cleo.
* Several months after the stabbing, Carter develops an addiction to painkillers, and in the Season 6 finale, Mark, Benton, Kerry, Jing-Mei, and Anspaugh try to get him to go to a rehab center in Atlanta. Words are had, Carter quits and angrily punches Benton... then dissolves into tears, horrified and ashamed. Benton hugs him, in that [[GrumpyBear faintly irritated Benton way he has]], and the next time we see them, they're side-by-side on the plane to Georgia.

* In ''April Showers'' Luka is unable to attend Mark and Elizabeth's wedding because he is on shift, but he gives Mark his clean shirt to wear for the wedding after his own was stained with blood from accidentally bumping his nose.

* In the finale of the season after [[HateSink Carla]] lies to Roger about Peter coming on to her after he turns her down for an affair, he storms into the hospital and assaults Peter, before Malucci quickly intervenes to protect Benton, pushing Roger back and keeping him away from Peter. This despite [[TeethClenchedTeamwork Malucci and Benton]] having come to blows with each other not many episodes before.

** A whopping seven seasons later, in Season 15's "Old Times," Benton can be seen wearing the L Train token as a necklace, which he's taken to wearing in his new role at the medical center. Benton never calls attention to it, but the fact that he still has it all this time later makes it much more meaningful to his friendship with Carter.

* There was a small moment in one episode when Romano was being all hard-nosed towards Benton when Benton was complaining about how much he was struggling to care for his son Reese (who was deaf); Benton turns and stalks off angrily, carrying Reese as he goes. But as he leaves, and Reese is staring at Romano over Benton's shoulder, Romano signs "take care of your daddy" to Reese. Reese even seems to nod back.

--->'''Romano''': Is he your husband? Do you love him? Then that's your answer.

* Rachel with regards to Ella. Even the episode where Ella accidentally overdoses on Rachel's ecstasy has some endearing moments between the two, such as at the start of the episode when Rachel happily offers to watch her little sister and is shown playing very cutely with her. Despite her previous behavior of lying to her father and step-mother she immediately confesses to having had drugs in the house when she realizes Ella might have taken it (which must have taken a lot of guts) and shows a lot of concern for her sister during the rest of the episode. Later on, after Mark's funeral, she asks Elizabeth if she can come visit Ella to which Elizabeth responds: "''Of course. She's your sister''".

-->'''Abby:''' Well, I have to admit, I don't think I could have planned a better wedding.
-->'''Luka:''' You don't?
-->'''Abby:''' I don't.

* Luka and Abby reconciling in the season finale, "The Chicago Way."

* In the Season 11 finale, Carter instructs Morris to set the tone (as Greene told him to do in Season 8), only to jokingly retract his advice after seeing how hungover Morris is. As the series continued, Morris gradually got better, but following his best friend Pratt's death, he really undergoes immense CharacterDevelopment, becoming one of the ER's best doctors. In "The Beginning of the End", he and Carter reunite, and [[CallBack Carter is quick to notice his successor's growth]]:

* In season eight a teenaged Rachel Greene has ecstacy pills in her backpack and her baby sister Ella, nine months old at the time, swallows a couple of pills, OD's, and nearly dies. After this, Elizabeth Corday (Ella's mother and Rachel's stepmother) is so furious with Rachel that she can barely stand to be near her, and Mark's refusal to send Rachel away almost ruins his and Elizabeth's marriage. After Mark's death some months later, Rachel asks Elizabeth at the funeral if she can still visit Ella, and Elizabeth replies "''Of course, she's your sister''." We find out in the series finale that the relationship between Elizabeth and Rachel has improved significantly since then. Rachel is doing her under-grad at Duke, where Elizabeth works, getting a deal on her tuition thanks to her stepmother. Elizabeth also comes with Rachel to Chicago for her med school application interview, appearing to be very supportive and proud of her step-daughter.
** There is also the fact that even though she's doing her under-grad in North Carolina, Rachel wants to go to medical school in Chicago, where her father spent his entire medical career.

'''Kerry:''' "I got it."\\

-->'''Kerry:''' "I got it."\\

* "Orion in the Sky" [[https://youtu.be/ohZ0hBO7H3w features Mark's last day in the ER]] and the last patient he treats is a little girl with a splinter under her nail. She describes the titular Orion to him, while he pulls the splinter out without her even noticing. Mark then thanks her because she become his last patient.

* In the finale of the season after [[HateSink Carla]] lies to Roger about Peter coming on to her, he storms into the hospital and assaults Peter, before Malucci quickly intervenes to protect Benton, pushing Roger back and keeping him away from Peter. This despite Malucci and Benton having come to blows with each other not many episodes before.

* The ending of ''The Domino Heart'' sees [[HurtingHero Lucy]] outside alone in the winter cold [[HeroicBSOD pondering sad thoughts]] after failing to save her heart recipient patient, despite all her best efforts. [[NiceGuy Luka]] arrives and finds her outside after his shift is over and [[YouMustBeCold drapes her in his coat to keep her warm]], offers to take her to the circus he has tickets for and expresses his concern for her, listening to her finally open up about herself and her wants and fears. In the end he manages to cheer Lucy up again, complete with some HeldGaze between them, before deciding to stay at the hospital with her instead of going to the circus, and teaching her how to perform a medical procedure on a newly arrived patient. Crosses over with Tearjerker, as Lucy only lives for another couple episodes, thus nothing comes of the seeming ShipTease.

* The ending of ''The Domino Heart'' sees [[HurtingHero Lucy]] outside in the winter cold [[HeroicBSOD pondering sad thoughts]] after failing to save her heart recipient patient despite all her best efforts. [[NiceGuy Luka]] arrives and finds her outside after his shift is over and [[YouMustBeCold drapes her in his coat to keep her warm]], offers to take her to the circus he has tickets for and expresses his concern for her, listening to her finally open up about herself. In the end he manages to cheer Lucy up again, complete with some HeldGaze, before deciding to stay at the hospital with her instead of going to the circus, and teaching her how to perform a medical procedure on a newly arrived patient. Crosses over with Tearjerker, as Lucy only lives for another couple episodes, thus nothing comes of the seeming ShipTease.

** Then at the end of the episode, Weaver and Romano work together on cleaning Lucy up.

* Several months after the stabbing, Carter develops an addiction to painkillers, and in the Season 6 finale, Mark, Benton, Kerry, Jing-Mei, and Anspaugh try to get him to go to a rehab center in Atlanta. Words are had, Carter quits and angrily punches Benton...then dissolves into tears, horrified and ashamed. Benton hugs him, in that faintly irritated Benton way he has, and the next time we see them, they're side-by-side on the plane to Georgia.

* Before leaving the hospital because of his approaching Alzheimer's Disease, Dr. Lawrence saves the life of a man with strychnine poisoning that was baffling all the others in the ER. Nurses Haleh and Lily and Dr. Weaver look on with pride as Dr. Lawrence describes the exact functioning of strychnine in the body and how he remembered a case from decades earlier of the same poisoning.

* The ending of ''The Domino Heart'' sees [[HeroicBSOD Lucy]] outside in the winter cold pondering sad thoughts after failing to save her heart recipient patient despite all her best efforts. [[NiceGuy Luka]] finds her outside after his shift is over and [[YouMustBeCold gives her his coat to keep her warm]], offers to take her to the circus he has tickets for and expresses his concern for her, listening to her finally open up about herself. In the end he manages to cheer Lucy up, complete with some HeldGaze, before deciding to stay at the hospital with her instead of going to the circus, and teaching her how to perform a medical procedure on a newly arrived patient. Crosses over with Tearjerker, as Lucy only lives another couple episodes, thus nothing comes of the seeming ShipTease.

* Doctor William "Wild Willy" Swift [[TheBusCameBack returning]] to [[DueToTheDead attend Mark's funeral]] after a four year absence since his previous guest appearance, where Mark's best friends Doug and Carol didn't even attend it.

* Doctor William "Wild Willy" Swift returning to [[DueToTheDead attend Mark's funeral]] after a four year absence since his previous guest appearance, where Mark's best friends Doug and Carol didn't even attend it.

* Doctor William "Wild Willy" Swift returning to [[DueToTheDead attend Mark's funeral]] after a four year absence since his previous guest appearance, where Mark's best friends Doug and Carol didn't even attend it.