In the first episode, when Tenzin's kids land on the dock? Jinora is letting Meelo ride piggyback.
The Bear Hug between Korra, Tenzin, and his kids at the end of the first episode. Also leads to a Funny Moment with Korra lifting not only the kids off of the ground, but also lifting Tenzin up with ease. Naga nuzzling them seals the deal.
And right before this hug, Tenzin's kids arrive on the dock and enthusiastically hug Korra. Jinora is slightly hesitant, but Korra waves at her to join in. Which she does.
Katara smiling at Korra as she excitedly runs off after her training session in the first episode.
Tenzin's kids calling Katara "Gran Gran".
Katara allowing Korra to go to Republic City, obviously remembering her grandmother letting her go on her own adventure.
When Katara talks about her other children, she mentions that one of kids' name is Bumi. Aang named one of his sons after his best friend. Their eldest daughter, Kya, is also named after Katara's mother.
A Leaf in the Wind
After Korra calls Tenzin a bad teacher and walks off, with Meelo imitating her and smashing things, his two little girls go and hug him.
At the end of the episode Mako stares at the island while Korra stares at the city. The music and the atmosphere make the scene absolutely beautiful.
More on the music. Korra's music and the music that seems to be setting the tone of the series is just perfect for it. But when Korra begins to use airbending movements at the fight the music changes to a callback of the previous series' music and is ultimately wonderfully nostalgic and triumphant.
Jinora's crossing through the spinning gates. Anyone who watched the first season of The Last Airbender can tell her stance and movements are exactly like her grandfather's were. It's a truly beautiful thing to see Jinora is just as much a prodigy to airbending as Aang was.
Jinora, Ikki, and Meelo each giving their own advice to Korra on how to cross the spinning gates.
Bolin gleefully shouting "I love you!" to Mako as he's rescued.
When it's revealed that Bolin spent a lot of money on groceries, Mako is really annoyed. But after that, and a hard day's work filled with grueling manual labor, he still gets Bolin's favorite dumplings on the way back home.
When Korra returns to Air Temple Island, Tenzin is relieved to see her safe—and when she tells him an unlikely-yet-true story, he takes roughly two seconds before deciding that he believes her.
Skoochy, despite being a serial pickpocket and only giving Mako information on Bolin's whereabouts after he [Mako] gave him money, the young urchin gives off a brotherly air to his fellow street urchins. From laughing at their mischievous action towards each other to beckoning them that it's time to go.
A Voice in the Night
Korra wakes up from a nightmare and Naga lays her head on Korra's lap. Anyone who has ever owned a dog can vouch for this being Truth in Television. The moment is captured in gif form here◊.
Hiroshi Sato being willing to sponsor the Fire Ferrets. He's one of the wealthiest people in Republic City but he never forgot where he came from, and is happy to return the favor of a 'selfless loan.'
Although it turns out this is only so they won't suspect him of being the guy who makes all the Equalists' weapons.
Tenzin comforting Korra as she cries after her close encounter with Amon is the most heartwarming moment of the show so far.
Tenzin throughout the episode, where he pretty much sees exactly what's going on and gently tries to help and shield Korra in her struggle with her fear.
Bolin giving Korra a cupcake and a rose as thanks for saving him from Amon, and then offering to deal with Tarrlok if he was harassing her.
This is pretty much the only scene that Korra laughs in during this episode, even if it's just a small laugh and smile.
A retroactive one in which Mako explains to Asami how his Scarf Of Ass Kicking is the only memento he has left of his father. In The Revelation, he lent it to Korra when they sneak in to the Equalist rally.
The Spirit Of Competition.
Bolin and Korra hanging out together. It's so cute, funny, and wonderful at the same time. Everything from them punking the Wolfbats at the restaurant, to their enjoying the view of the city in winter from one of the tower landmarks, to the burping contest that leaves the other restaurant patrons agape in disbelief at both of them. That sound you're hearing is the collective squeeing of all the Bolin/Korra shippers out there.
Everything Bolin does is so often Played for Laughs, which just amplifies the sweetness of the moment when Bolin's face softens as he watches Korra absorb the view at the end of this date sequence.
Mako and Bolin in the aftermath of the Makorra kiss. Bolin is drunk off his ass on Water Tribe noodles, and Mako knows exactly where he is and picks him up to carry him home. That's brotherly love for you.
The Fire Ferrets realize that maybe romantic tensions have yet to be resolved, but life goes on and they can still be friends.
Bolin and Mako making up.
Mako: "Are you okay? How's your shoulder"
Bolin: "It's messed up pretty bad...But yeah. I think I'll be all right."
Bolin: "Are we...gonna be all right?"
Mako: "Of course we are! We're brothers. We'll get through this mess. I'm sorry."
Mako and Bolin cheering and Mako picking Bolin up from behind in a Bear Hug after Korra wins the match.
Bolin: "Shoulder! Shoulder!"
Korra sincerely thanking Asami for all her help.
Korra healing Bolin, as taught by none other than Katara, "the best there is".note The statement is sweeter when one considers that Katara herself was the key for restoring the Waterbending Teachings in the South Water Tribe.
Bolin calling Korra the "smartest, funniest, toughest, buffest, talentedest, incrediblest girl in the world."
And The Winner Is
Lin, who has a grudge against Korra for being a Destructive Savior, still chooses saving Korra on multiple occasions over fighting/arresting the Equalists.
Tenzin reveals that despite Lin's personality not having changed much since she was a kid, she still "got along famously" with Aang.
She even calls him "[Tenzin's] sweet-tempered father" when comparing Korra to him, showing she still respects him and likes him after all these years.
Mako and Bolin hug Korra after she comes back from trying and failing to get to Amon. They can truly be called the Krew now.
Particularly Mako's earnest tone of voice when he tells her "I'm so glad you're safe!" Yeah, he definitely likes her.
There's another moment when Tenzin reveals to Lin that since Korra joined the Fire Ferrets he's brushed up on the rules for pro-bending, a sport he was initially opposed to and thought of as a "mockery" of bending.
After the events with the previous episode, Tahno has shown he has opened up a kind side to him and has a short chat with Korra, both having no resentment. Before he goes with Lin and Tenzin to be interrogated, he looks to Korra and gives a farewell with a smirk, dropping the accent to boot.
Tahno: See you around, Uh-vatar.
Korra sacrificing her own possible relationship with Mako, telling him Asami will need him after learning her father is an Equalist.
The Cabbage Man, the eternal Butt Monkey of the original series, now has his own statue at the company he built.
Korra offering Mako and Bolin a place to stay at the beginning of the episode, an offer that she says is both still open and extended to Asami after they learn the truth about Hiroshi Sato.
Even before that, Korra consistently showed sympathy toward Asami, never angry or suspicious toward her even when rightfully accusing her father and having Asami vehemently defending him.
Korra and Asami bonding at the race track, with Korra admitting she was wrong to judge her before.
A small one, but Bolin and Mako (Mako!) messing around in the pool like the brothers they are is really sweet, especially in between the previous episode and the climax of this one.
Look carefully at Tenzin's use of Air-Cycle. Not only he is using a modified version of Aang's air-scooter, he's showing that despite being the opposite of his father, he's still proud to be his son.
We hear Shiro Shinobi narrating the "Recap" at the beginning. For everyone who was worried about what happened to him after he disappeared the last week, he's okay. Many fans grinned when they heard his voice.
Pabu comforting Korra by licking at her face. He seems to like her as much as Naga.
Korra telling Naga "Don't worry, girl, I'll be all right" before going to fight Tarrlok, and Naga nuzzling her. Also a tearjerker, considering the end of the episode.
When Bolin shouts, "The new Team Avatar!" for the first time, hearts will melt.
After Tarrlok mentions that Korra is merely an "Avatar-in-training" due to her inability to airbend, she's very down on herself and considers herself a failure. Mako comments that even Avatar Aang did not know all of the elements when he faced the Fire Nation, and Bolin comments that Aang also didn't face his problems alone, he had his friends who saw him through everything. Mako, Bolin, and Asami all pledge their support to Korra, and snap her right out of her funk.
Mako opening the car door for Korra. Given the current status of their relationship, it was probably an innocent act of friendship, which means that both shippers and none-shippers of Makorra can enjoy it. Anyone who's ever had a close friend do something like that for them, small but sweet, knows how heartwarming it is. If nothing else, it's just nice to see Korra and Mako, who spend a lot of time fighting and picking on each other, showing the softer side of their relationship.
The moment when the crowd being rounded up by Tarrlok and the police force beg Korra for help. It's a horrible situation, crossing into Tear Jerker, but at the same time, despite Tarrlok's actions validating everything that Amon and the Equalists have been saying about bender oppression, ordinary people still have faith in the Avatar to stand up for all people, which is exactly what she proceeds to do.
Out Of The Past
In the beginning, we have an adorable shot of Pema, Tenzin, and Meelo asleep together- with the little kid nestled up between his parents.
Mako's concern for Korra is quite intensely heartwarming; he was willing to go so far as threaten an Equalist mook with firebending to tell him what he wanted to know.
At the end of the episode, Mako tells Tenzin, Lin, and the rest of Team Avatar to give Korra some space, then carries over to Oogie's saddle so she can get some rest. He certainly can't deny that he likes her now.
Even more heartwarming in hindsight with Mako's admission in "Endgame" that it was when Korra was taken that he realized he was in love with her.
It was nice to see Aang, Toph, and Sokka again and all grown up. Even if it was only in flashback form.
And Toph still calls Aang "Twinkle Toes" even though they're both in their forties. Nicknames really stay with you for life.
"Whoa... I finally connected with you, Aang."
Naga went looking for Korra and found her.
Lin Beifong rescuing her officers. For such a BadassIron Lady, it's really nice to see how much she cares for them, going so far as to sneak into the Equalist base just for them (as well as look for Korra). The way she spoke to her officers was probably the softest we have seen speak, and she felt very bad that Amon de-bended them. She truly is A Mother To Her Men.
On a similar note, the part where Lin zips up Bolin's zipper is heartwarming as well as a funny moment. Not only does Lin act like a typical mother, but Bolin acts like a typical son. This is more heartwarming when you think about how Bolin hasn't truly had a maternal figure since he was six years old.
The scene of the ex-metalbenders was tragic. We later see one of them sitting beside Bolin as the Krew escapes. After Bolin does his whole "Try chi-blocking that, fools!", the ex-metalbender has a big grin on his face. It is really heartwarming given he was stripped of his power, was jailed for weeks, and finally had something worth smiling about.
Turning the Tides
The General who's Zuko's grandson. What's his name? Iroh.
Asami admits that, even with her jealousy issues, she still likes Korra, stating that it's Mako she has a problem with. It's nice to see a Love Triangle where one of the women doesn't hate the other.
Even nicer when you realise that neither of them hate the other and in fact have a healthy respect for each other. They even consider each other to be True Companions as the new Team Avatar.
Jinora beating up Equalists to save Lin with her siblings. "Stay away from my dad's ex girlfriend!"
After Lin's Heroic Sacrifice to perform a You Shall Not Pass on the airships to give Tenzin's family a chance at escape, Meelo declares "That lady is my hero" and Tenzin agrees.
Lin's refusal to tell Amon where Korra is at the cost of her bending.
It makes it even more heartwarming that she's gone from despising Korra to even being willing to lose her bending to protect Korra and Tenzin's family.
Not only that, she believes so strongly that the world's last airbenders must survive that she's willing to go to what could very well have been her death, as well as figuring Amon would take her bending at the very least.
Tenzin's concern for his children fighting alongside Lin was understandable, but Lin tells them that they did a great job, and that Tenzin should be proud, and has taught them well.
Tenzin's fourth child is born. A nice quiet moment in a Wham Episode.
Tenzin's older kids introducing themselves to their new little brother.
Ikki: Welcome, I'm Ikki and this is Jinora and Meelo. We have a super great family and we're so happy that you're a part of it!
Tenzin trying to face the mechas alone so the officers can run. It fails, but thankfully backup arrived.
As soon as Tenzin gets home from finding Korra, he rushes to his wife and children, who are all sleeping together. Turns out they stayed up the whole night to try to catch him once he got home. The scene gets even more aww-worthy when Tenzin scoops up Ikki into his arms and hugs her, telling everyone that everything's going to be alright. Too bad it isn't. Ikki herself lampshading this mere moments after turns it into a Tear Jerker
Mako sitting by Korra's bedside and holding her hand as she sleeps.
Jinora the big sister. There are several small but very heartwarming moments throughout the episode. After Tenzin reassures the family about Korra, Jinora lays Meelo's head in her lap and smiles. When the Equalist airship is approaching and Lin tells the kids to get inside, Jinora takes Ikki and Meelo by the hands and leads them away. And when the family is escaping on Oogi, Jinora and Ikki are holding onto each other.
After Korra grumbles about needing to be patient, Tenzin says that she's learning well. The little smile she gives, and the subsequent hug in the next scene, show just how far their relationship has come from the initial episodes.
Mention must be made of the White Lotus guards holding off the chi-blockers long enough for Korra and her friends to escape the besieged Air Temple Island. They know what their sacrifice is going to cost, but their job is to protect the Avatar, and by gum that's what they're gonna do.
Lin (who tried to have Pema arrested for stealing Tenzin from her) getting along with Pema just fine and even was concerned for her well being when she was having contractions. Especially sweet considering she held resentment towards Tenzin until Chapter 7.
Skeleton In The Closet
Mako telling Korra that she is the most loyal, brave and selfless person he's ever known and he can't imagine his life without her. Korra responds with how he already knows how incredible she thinks he is.
Mako telling Asami no matter how messed up things have gotten between them, that he really cares about her. She then kisses him on the cheek, as an indicator that they'll remain friends no matter what.
Korra telling Naga to take care of Bolin. Then Naga licks Bolin.
When Team Avatar (plus Iroh) leave the hobo community, Gommu says "Good fortune and success to you, valiant heroes".
Not to mention the fact that the community consists of benders and non-benders living together in harmony. There is no single bigger slap in the face they could send to the Equalist's philosophy.
Noatak defending Tarrlok from Yakone. And then he offers to take Tarrlok away, so neither of them have to live under Yakone's shadow again.
General Iroh looking on as Aang's memorial statue is removed of Amon's mask and thanking him in spirit was a nice touch. Zuko's voice makes it even better. Friendships do transcend lifetimes after all.
General Iroh: Thanks for looking out for me, Aang.
General Iroh: My grandfather would trust the Avatar's instincts. So will I.
After breaking down from the loss of her water, earth, and firebending, Korra runs off to be alone. Then Aang appears. Then all the past Avatars. Then he restores Korra's bending.
In relation to that, it perfectly caps off Korra's trait of running out alone when she hits a dark place. Although she's had a bit of a stumbling block until then, now that she's finally made the connection; as the Avatar she is never truly alone.
And seeing a fully grown Aang standing shoulder to shoulder with all the past Avatars was one of the best parts of that scene.
Further punctuated by Katara in the following scene. She knew only one person could have restored Korra's bending, and was glad that he was back again.
Mako telling Korra that, Avatar or not, he loves her.
After getting her bending back, Korra tells Mako she loves him back and kisses him. Big Damn Kiss indeed.
Korra launches herself into Mako's arms and he twirls her around with such a happy and loving expression on his face. It's a beautiful moment.
The proud look Mako gives to Korra after she gets out of the Avatar State.
Heartwarming and heartbreaking: When Korra runs off to the cliff after losing her bending, she looks as though she's contemplating suicide. Mako's "I love you" probably made her hesitate just long enough for Spirit!Aang to manifest.
Korra finally airbending because Amon was about to take Mako's bending away.
Amon reuniting with his brother Tarrlok, and honestly wanting to start a new life away from Republic City. Sadly Tarrlok killed them both in the end, since escaping justice to start a new life was just what their father did, and Tarrlok didn't want his legacy to continue.
The final tear that he sheds before that moment. So much humanity from both of the characters made it one of the most touching and heartwrenching scenes of the series, even though the two characters had committed so many horrible acts.
Lin thanking Korra for returning her bending to her. It's incredibly touching considering how hostile Lin was to Korra at the start of the series.
Even more perfect were the expressions on Tenzin, Katara, and Bolin's faces; pure and utter happiness and amazement for Lin.
Punctuated by Naga wagging her tail in happiness as soon as Lin demonstrates that that she can bend again.
What makes this moment beautiful: Lin got her bending back from the person she saved by losing it.
Right before then, the look on Korra's face as she realizes she's become a fully realized Avatar; able to blink in and out of the state, skipping even the reactive phases Aang had to go through. Joy couldn't have been displayed any better (right up there with Tenzin's kids reacting to their new sibling).
Bolin rescuing Asami from being killed by her father while calling him out on his being a horrible father.
That moment made me a total Bosami shipper. It's not just Pair the Spares anymore to me; they...well...they both deserve it...
The fact the bending council was replaced with an elected president. Not only this made Republic City more of a free nation, but that it shows the Equalists' point was still heard and acknowledged.
The hug Asami gives Bolin after their successful interview with Verrick. How badly damaged Future Industries was after the arrest of Hiroshi was entirely understated until Asami's thank-you hug. It spoke volumes about how much stress she was under and Bolin effortlessly paved the way for Future Industries to survive bankruptcy and get back on top.
Katara convincing Tenzin to spend time with Bumi and Kya when he's down about Korra leaving to train with Unalaq.
Katara being reunited with her grandkids, and Jinora and Kya sharing a warm hug.
Katara holding Rohan at the royal feast.
Mako telling Korra that, though he's not very good at the Avatar counseling stuff, he knows her heart is in the right place and she'll have to trust it. Korra twining their fingers together and Mako's subsequent smile are very sweet.
The Southern Water Tribe has become a large city. Pretty awesome when you remember how it looked in Aang's time
The Southern Lights
It's revealed that the Southern Air Temple is now cleaned up and inhabited again. It seems probable the others have been refurbished, too.
Bolin running to give Korra a hug after her trek into the spiritual center of the South Pole.
Mako once again twirling Korra around in his arms and telling her she "never ceases to amaze" him. She then apologizes for being short with him throughout this episode and the one previous, to which he responds by making a joke about the hardships of being the Avatar's boyfriend. The way he knocks their shoulders together and Korra hugs him afterward is simply adorable.
Jinora's look of awe and delight when she sees the statue of Aang. This can cross into Tear Jerker territory, since Aang died before he got to meet any of his grandchildren.
Tonraq's look of pride and his pleased declaration of "She did it!" when he stops his snowmobile to admire the Southern Lights Korra has just released into the sky.
Meelo and Ikki curled up in the same bed at the Southern Air Temple.
Mako's insistence on making sure Korra is well-prepared for their trip to the South Pole. Though she teases him and calls him "Captain Expedition," she also seems pleased by his care and concern.
Civil Wars, Part 1
Korra's reconciliation with her father, Tonraq. Truly a sweet moment. This is moments after she foils a kidnapping attempt on Unalaq by a group of Southern Water Tribe waterbenders, of whom she thinks Tonraq is part of, but she turns out to be mistaken.
Tenzin using a baby voice when talking to Rohan is somehow very sweet.
Kya dropped everything to be with and support Katara after Aang died. Just as it is in real life, individuals who do this for their parents (especially if they seek to satisfy their own wanderlust) sacrifice a lot, and often become embittered about this choice at it robs them of their autonomy and of the many great chances they could have had in life. But Kya is proud of her choice and has even decided to settle down despite what she may have yearned for her own life. She really loves her mother dearly and has a very close connection with her... especially when one considers Aang's favouritism for his only Airbender son over his other two children.
Arguments on Aang's parenting nonwithstanding, all three kids (and Korra) seem to love and respect Katara, showing that our favorite Team Mom grew up to be a great bender, force for good, and a fantastic mother.
Civil Wars, Part 2
Tenzin finds Ikki in a cave, having a tea party with baby sky bison. Rather than freak out on her, he asks if he can join in. They end up talking about the good and bad of having siblings, a conversation which leads them to realize how important family really is.
And the baby bison themselves. Not only are they adorable, but being around them helps the two of them learn the lesson of the day.
Bumi dropping by Aang's statue to talk, hoping that Aang is proud of him for trying to protect the world even though he didn't turn out to be an Airbender. Then Kya comes in and gives him a hug to reassure him.
Asami, Mako and Korra working together. With the tension they all had towards the end of Book One to moving to working together, it's something nice to see.
Finally, Tenzin brings Ikki back and both sets of siblings make up.
Mako standing by Korra's side with his arm on her shoulder during the trial.
Despite being willing to just ignore the trial and break her father out, Korra agrees not to interfere because he asks. But then she has to see her mother crying because she feels helpless. She may honor her father's wishes, but she's not about to let her mother suffer for it.
Mako and Asami immediately and wholeheartedly agreeing to help Korra break her father and the rebels out of prison, despite Mako giving Korra a few words of caution beforehand.
Korra hugging her father and them exchanging "I love you's" as Korra prepares to depart for Republic City to argue the South's case to President Raiko. Considering all the strife Korra and Tonraq went through in the first few episodes, it's nice to see such a sweet moment between them.
Lin spent the episode acting like her early season 1 self—that is, curt and abrasive. When she learns Korra broke Mako's office in response to them breaking up, instead of scolding him, she tries to make him feel better.
Korra seeks out General Iroh (still voiced byDante Basco) to ask him and the United Forces ships under his command for help. While this ultimately fails, as President Raiko threatens to court martial Iroh if any of the United Forces ships leave Republic City to aid the Southern Water Tribe, Iroh advises Korra to seek out the Fire Lord, his mother, for help.
Iroh: My mother and grandfather have always been good friends to the Avatar, and to the Southern Water Tribe. I'm sure they'll be willing to help.
Everyone is leaving the dock to do their own thing, so Bolin asks what he should do. Mako simple tells him to figure something out, essentially brushing him off. Varrick, on the other hand, offers to take Bolin out and show him a new side of Republic City and even finds his true talent and a spot to help in the war. For someone who is supposedly an overtly corrupt businessman that is willing to make money through any means, Varrick cares for Bolin and sees him as a friend.
The pro-bending crowd's reaction to Bolin. Despite his team's pitiful performance this season, he's a hero to them all.
The fact that Tenzin's using his holiday to spend time with his children, quite happy to have tea-parties with Sky Bison, or help train lemurs. While we get some less-heartwarming references to Tenzin's own childhood, seeing him interact with his kids is lovely.
Mako and Asami working together. Their relationship last season may have been messed up, but it's great to see them being the very epitome of Amicable Exes; they're still friends who care about and want to help each other.
The Fire Sages have returned to help their Avatar once again.
Beginnings Part 1 and Part 2
A small one, but it's so wonderful to see the old sage woman try to heal Korra with firebending when it was originally thought to only be destructive.
Wan has a rough time stealing food to eat and when he gets home, he gives most of it to his friends, one of whom is an outcast because an encounter with a spirit left him mutated.
He also tries to teach his fellow outcasts to gain power so they can be free from their oppressors. Unfortunately, it doesn't end well, but he stands by his friends and defends them, even though it makes things worse for him.
Wan saving the trapped cat-deer Mula, who would become his animal companion, led spirits to trust him and teach him their ways. One lemur spirit who was particularly nasty to him becomes one of his best friends.
Said spirit (an aye-aye) even affectionately calls him "Stinky".
The aye-aye bowing and smiling to him before finally leaving for the spirit world.
In a bittersweet way, Wan's death. He has lived to be an old man and now lays alone in a battle-scarred wasteland. He's failed to accomplish his quest to peace but Raava tells him she will always be with him and that she will never give up. Raava appears in the form of a golden cloud, the scene fades to white, and you hear a baby cry.
Korra wakes up for her spirit coma with all her memories.
Raava was disdainful of Wan at first, but as they continued their journey together, they became extremely close.
The Fire Sages protected a herd of Sky Bison during the Hundred-Year War, ensuring the species would survive to the present day. Now we know how Aang got them.
How not all the spirits were complete bulliesto Wan despite him being human. They even wished him luck on surviving.
The past Avatars appearing to Korra to help her regain her memories, with Wan appearing to show her his story, so she could remember who she is.
The Shout-Out and allusions to Hayao Miyazaki's works, such as Spirited Away and Mononoke, ensures that American fans like Bryke will preserve Hayao's legacy. Especially meaningful in the wake of Hayao's retirement in feature films.
Jinora's friendship with the rabbit-dragonfly spirits.
Heck, Korra and Jinora start to bond a bit more over the episode.
Kya being a Cool Aunt to Jinora. Despite Kya's arguments with Tenzin, she's very close to and supportive of Jinora, and it's incredibly sweet.
Kya protecting Jinora with her body when the dark spirits start to attack.
When Korra shows up, the kids are really happy to see her.
Tenzin and Korra making up after their disagreement earlier in the season.
Even though Tenzin's obviously disappointed Jinora's going to The Spirit World with Korra in his stead he tries his best to brace Jinora for what may await her in the spirit world and tells her he's proud of her while sharing a hug. It's good to see some good parenting after Ozai, Hiroshi, Yakone and Unalaq.
Despite not being very nice, Eska shows that she loves her brother Desna. While Unalaq decides to just leave him and continue trying to open the portal, Eska defies him and hauls Desna away to get help for him.
Pay attention to the voice work in that scene. Eska's voice actress has sounded more emotional in that one scene than any of her past appearances. She drops her Creepy Monotone for the sake of her brother, and when she calls for his name after he had been hurt you hear genuine concern.
That's Aubrey Plaza, who plays April on Parks and Recreation. She's very good at going from uncaring to caring and back on that show.
Korra telling Meelo that she thought that he rang the bell perfectly, moments after Tenzin blamed him for not ringing the bell at the proper intervals.
Just the whole scene when Korra and Jinora enter into the Spirit World. For some reason, just hearing the music and the scenery is just beautiful.
A New Spiritual Age
Tenzin and his siblings have a nice moment near the beginning, while they're watching over Korra and Jinora's bodies (which is a CMOH in itself).
Jinora's spirit friend comes and helps her when she gets separated from Korra.
Unfortunately, this makes his corruption into a dark spirit even worse.
Iroh the first showing up and comforting Korra when she's been turned into a child and separated from Jinora, giving her his usual sagely advice and guidance.
Korra, when she utters, "I can make the sun shine?"
Korra returning the baby-dragon bird to its nest, where it does a Fusion Dance with the other three chicks there, and proceeds to take Korra, restored to her normal age along with her confidence, to the spirit portals.
She also got help from bulldog-like spirits, who quickly agreed to help her out...until they got corrupted, that is.
How does Korra purify spirits in this world? Not as Korra the Avatar, by using bending, but as Korra the person, simply by letting out the light within herself. It shows that Iroh's advice has led her to realise her worth as herself, not as part of an unbroken line of Avatars.
Korra's dragon-bird friend pulling a Big Damn Heroes and saving her from Unalaq, even giving the jerk a well-deserved smack.
What's even better is that unlike the other spirits, this one doesn't get corrupted.
In the spirit world, Iroh shows up wearing Earth Kingdom garb and has gone back to his original weight, in addition to not looking much older. If his appearance is a factor of self-identity like Korra, then he must see himself not as a great general or prince, but as the roly-poly old teamaker of Ba Sing Se. Alternatively, assuming he left the material world in that state, then he really must have lived his last years in the Earth Kingdom tending his tea shop, just like he said he would. Either way, Iroh lived his last years happily, and got to go out on his own terms.
Night Of A Thousand Stars
Although he completely failed at comforting his brother, it was rather nice of Bolin to visit Mako, even promising that he'd hire a lawyer for him.
Bolin getting a kiss from his co-star after saving the president.
After being delegated to comic relief and shunted to the sidelines, it was wonderful to see Bolin get to be a hero (in real life and on the big screen)
Asami cheering Bolin up. They have a really great friendship.
Korra giving Mako a big kiss when they reunite, having mostly forgotten their fight. It's also great to see her so cheerful.
Bolin's joy that Team Avatar is back together!
It may be kinda twisted, but Desna's belief in his dad would be kinda touching if Unalaq wasn't trying to free the Ultimate Evil of their world.
Korra and her dad giving each other a hug before the fight with Unalaq in the spirit world.
Mako and Bolin following Korra into the spirit world.
Just as Korra is close to defeat and she is about to black out, Raava speaks to Korra telepathically, motivating Korra not to give up and that she is the Avatar.
Iroh the first shows up again to try and help Tenzin, Kya, and Bumi. The siblings, who apparently met Iroh when he was alive, were happy to see him again.
While Mako and Bolin are left frozen in a block of ice from the neck down thanks to Eska and Desna, Mako tries to convince the twins that their father is evil. Desna does begin to reconsider his allegiance,but Eska tells him that they are just lying to him. Bolin then starts bawling that he will never be with Eska again, and that he always loved her and wanted to be with her and is now downtrodden that he will not get that chance now that world's end is nigh. Eska then retorts that they could have been together, if not for the fact that Bolin had left her at the altar, but Bolin replies that he was scared of his true feelings for her and that she should have never left and is saddened that they can never rekindle their "Big Fire of Love Flames". Eska then kisses Bolin, melting the ice encasing the brothers and Eska tells Bolin that should she survive the ordeal with Unalaq, they will spend an eternal darkness together. As Mako and Bolin leave, Mako commends Bolin on his acting, while Bolin himself is not so sure about that, wiping his tears as they leave.
While in the Fog of Lost Souls, Tenzin begins to question himself because of the weight of the world on his shoulders and wonders if he will fail. Avatar Aang appears and Tenzin tells his father that he failed him and that he will never be like him. Aang then agrees to Tenzin that he will never be like him, and Aang adds that he shouldn't be. Aang then tells his son that he should be his own man, to which Tenzin agrees to this and because of his declaration, he has cleared the fog, finding his daughter. Tenzin then takes his family out of the fog.
It's small, but when Zhao takes a hold of Tenzin ranting about he's going to capture him before Tenzin can pull him off Bumi grabs Zhao off of his brother and Kya waterbends him away. It's a nice small sign that even after all the grief the three of them give each other they are still family who love and protect each other
Light in the Dark
Tenzin reassuring Korra and helping her find herself after losing Raava.
Now this might be reaching but, the fact that Unalaq's words were what ultimately helped Korra obtain her giant cosmic energy empowered blue spirit form seems to indicate that he may actually have spoken to her psychically. It may not be to much of a stretch to think he'd seen the error of his was and was trying to fight Vaatu the only way he could.
Unalaq: Find the light, in the dark...
Bolin and Eska. Amazing what Armageddon can do to some people...
Bolin: ESKA! I LOVE YOU! [kiss] LET'S FACE THE END OF THE WORLD TOGETHER!!! Eska: ... You're so romantic.
Jinora pulling a Big Damn Heroes and helping Korra beat the Dark Avatar, then reawakening in her physical body with her grandmother and Asami.
"Look Mommy, it's Jinora. She's... beautiful!"
Raava willingly fusing back with Korra again before the Harmonic Convergence ended.
Bumi reuiniting with Bumju.
Bolin giving his brother a (probably much needed) hug after he and Korra broke up for real.
The breakup itself oddly becomes one, Mako admits what a jerk he's been, and he and Korra realize what a mess their relationship has become and decide to break up despite redeclaring their love for one another .
The same could be said about Bolin and Eska. Even with a rough start and end, they really do care about each other and know that their relationship wont work.
Eska's voice actually catches when she's saying goodbye to Bolin. If ever there was a doubt she felt genuine affection for him, it's gone now.
After Korra defeats Vaatu and saves the world, everyone runs up to hug and congratulate her. Mako is first and gives her a adorably big kiss on the cheek.
Book 3: Change
A Breath Of Fresh Air
Harmonic Convergence is revealed to have unlocked airbending abilities in people all around the world, giving real hope to Aang's dream of restoring his people to a full society. Tenzin's joy and promise to work with his kids to rebuild is adorable.
Korra and Asami happily chatting together, having moved on from the Love Triangle ordeal, with Asami trying to teach Korra some driving. Korra remarks how nice it is to have a female friend.
The bridge scene where Korra coaxes the frightened new Airbender down in a pragmatic way, first by simply sitting near him and starting a rather casual talk to calm him. She has grown a great deal since her first time in the city.
Bolin describing the extended air temple family. He's so happy to be part of a family.
Even though it was futile, Bum-Ju tries to help Bumi when he's about to fall from the tree.
Korra, and Tenzin with some encouragement, deciding to take new airbender, Kai, with them even after he deliberately lied to them.
Kya holding Rohan and asking if he's ready to send some time with his "Auntie Kya".
The Earth Queen
Mako and Bolin meeting their extended family, with Mako giving his grandmother the scarf his father gave him.
Before this, at the start of the episode, it's the complete excitement Bolin has at the prospect of visiting the city their father grew up in.
Kai complimenting Jinora on her teaching and Jinora blushing afterwards.
Bolin constantly worrying over his "little brother" Kai. It's especially heartwarming given that fact that Kai was giving him and Mako a hard time, but Bolin isn't mad, only concerned.
P'Li: I thought I'd never see you again. Zaheer: I never doubted it.
Jinora kissing Kai on the cheek. Followed by Kai's goofy, blushing expression.
Then there's Kai's heroic rescue of Jinora when a Dai Li grabs her.
The captive airbenders agree to become Air Nomads. Tenzin is finally seeing his dream come true.
The Manly Tears that Tenzin sheds during that scene is the icing on the cake.
The fact that Tenzin and Korra leave the choice to the airbenders is really sweet too. They say that the airbenders are no-one's property and if they decide against joining the Air Nomads, they'll simply relocate them somewhere safe.
The Metal Clan
Suyin's family in general. It's clear that she loves her kids dearly.
The fact that, in spite of their past, Suyin still wants her sister in her life, and has told Opal so many good things about her that she very much looked forward to meeting Lin.
Bolin and Opal hitting it off - about time the poor kid got a break.
Initially, he tries his whole 'smooth' way of talking; she's turned off by this. Then he goes to apologize, saying he's uncertain when he knows a girl likes him, he gets self-conscious and doesn't really know how to act... she initially teases him about if she likes him or not (she does), but she likes the real him rather than the 'trying too hard' version.
As creepy as it was, Zaheer's interactions with Meelo and Ikki was somewhat sweet.
Ikki upon meeting "Yoru" (Zaheer): "Mom! Aunt Kya! We got another one!"
How bending is shown to be used for something else besides fighting or sports as demonstrated by Suyin and her son, Huan: Bending can used either for dancing and/or sculpture respectively.
This extends to the idea behind Zaofu in general, which also doubles as a CMOA as well. A city of innovators, artists, inventors, and scholars, where freedom of expression is encouraged, ideas are fostered, the citizens are urged to reach their highest potential and positions are based on merit rather than wealth or tradition, and people are allowed a second-chance and a fresh start, which was why Suyin created the city in the first place.
The statue of Toph in the downtown core of Zaofu definitely counts as one, and helps cement the assertions as listed above. While the statue outside RCPD HQ does a good job of showing how great a leader and force for good Toph was for the city and the world, the statue in Zaofu serves as a reminder that she was more than just a fighter and a hero associated with raw strength and wartime exploits. She was the first metalbender, and "expanded the possibilities of what benders are capable of," proving that she was just as much a great innovator and woman of intellect as she was a strong warrior. It reminds people that, without Toph's desire to be more, to reach her full potential, many of the technologies and feats that helped forge the current world, and places such as Republic City and Zaofu, may not have been possible. Toph really did change the world.
Lin and Suyin finally burying the hatchet.
Then there's Lin's subsequent apology to Opal, which ends with her hugging her aunt. Lin even returns it. Aww.
Bolin and Opal bonding over their insecurities, then hugging.
Suyin being completely willing to teach Bolin Metalbending. Shame the lesson was interrupted before it began.
Metalbending acupuncture. Once again, bending displays yet another form of healing instead of fighting.
Suyin was sent to stay with Toph's parents, implying she eventually reconciled with them.
Tenzin telling Bumi how proud he is of him.
And before that, Pema's advice on how to deal with his students. They may be airbender volunteers, but they're also people away from their homes and lives (something she experienced when becoming an Air Acolyte); it'll take awhile to adjust, and he just needs to be patient with them. Tenzin briefly mentions that he knows how Korra must feel when she listens to him, but thanks her, even giving her a little kiss.
Baby air bison - even Kai is won over by their cuteness.
The Air Nomad culture surviving through Tenzin, his children and the Air Acolytes.
The fact that Guru Pathik's teachings about how the nations are all one people comes true in the series, as the city that's the series's main setting sprung up from the efforts of all the world's nations.
The names of Aang and Katara's two other children: Kya and Bumi. note Named after Katara's mother Kya, and Aang's best friend (pre-iceberg) Bumi.
Mako's devotion to Bolin - he'd do anything to keep his little brother safe.
Not only that, but Nick.com's guide to Republic City reveals that even Bolin would give up his life for his brother.
Zuko's grandson is named Iroh. Remember that Zuko's daughter most likely named him, not Zuko. Now rewatch "Tales of Ba Sing Se", specifically "The Tale of Iroh" and look at how good he was with the crying child. Iroh must have loved the hell out of his surrogate granddaughter and the love must have been reciprocated to the point where she would name her son after him. Just the idea of Iroh being a sweet and loving grandfather is practically enough to put one to tears.
The inspiration for Rohan's name? Bryan Konietzko's nephew.
The fact that Energy Bending, in addition to taking away a person's bending, can also restore it. Even more sweet because Aang himself seemed to have learned this in his time between the two shows.
The first episode, Welcome To Republic City and the final episode, Endgame both feature someone telling Korra they love her at the South Pole. The first is her mother Senna telling Korra that she and Tonraq love her. The second is Mako confessing that he is in love with her.
In the first episode, young Korra was voiced by Cora Baker, Dee Bradley Baker's daughter. Way to make an entrance into voice acting, kid. Also, the fact that they have similar sounding names.