In DC Comics, Martian Manhunter had a marked love of OreosChocos until he gave them up years ago. When the Martian Manhunter died, his last act was to telepathically connect with several heroes. They all began writing his life story, and then organized his funeral. Superman flew a goddamn pyramid through space to Mars, to serve as his final resting place. Several superteams dropped what they were doing to see him off. When they buried him, Batman left a single Choco on the coffin next to the wreaths.
It was nice to know, after Green Arrow's ominous promise that whoever had killed Martian Manhunter would "suffer", that the heroes were still those noble men and women of our collective childhoods.
In Brightest Day #0, J'onn is doing some maintenance work on Mars and when he goes to his pyramid, he sees Hal and Guy waiting for him. And they have a present: a box full of Chocos as a "Welcome Back" gift. And Guy was wise enough to bring the milk, too.
It's not popular, but the 1980s Shazam: The New Beginning had one of the great moments of the character. Billy, having run away from his villainous guardian, Dr. Sivana, only to find that his Uncle Dudley is out of town, runs through the street in despair until he meets the mysterious stranger who takes him to the wizard. The heartwarming moment is right after that meeting when the wizard Shazam bestows the Captain Marvel power on Billy, only to have the boy find himself outside the closed subway entrance as if nothing had happened. Billy, desperate for the power to defend himself against Sivana, calls out to the wizard for help only to have no reply. In utter despair, Billy wails "Can't you hear me, SHAZAM?!" With that, * KRAKOOOM* the magic lightning hits Billy to change him into the Captain as he realized that this was no dream, it was real and he truly has the power of Shazam!
There was a more recent Shazam series which involved Superman figuring out Billy's identity as a homeless kid, and deciding he needs some mentoring. He goes to visit him as Clark, opens his coat and shirt, and then quietly sits down. "I'm Clark..."
That same story, "First Thunder" had one of Billy's friends murdered in front of him and Billy starting to go into a Despair Event Horizon while still being Marvel. When Superman confronts him, Billy reverts back to normal and Superman sees that the hero who could give him a run for his money in a fair fight, and more importantly is a valuable ally to fight magical enemies that could stomp him with a shrug, was just a young boy who lost his friend. Supes then proves himself to be truly selfless and confronts Shazam for recruiting Billy in the first place.
Also from Infinite Crisis, The Flash Family taking Superboy-Prime into the Speed Force; it doubles as a CMOA, because not only did they take down an unstoppable psychopath, but they did it as a family.
And from Infinite Crisis again, there is Superman from Earth Two coming to the aid of Power Girl and showing her the life she had with him and Lois. After she thought she was all alone, someone who didn't belong, it was truly heartening.
Power Girl: [tearfully] You took me in! You treated me like I was your daughter!
Earth 2 Lois Lane: Oh, honey... as far as we were concerned, you were our daughter.
Again from Infinite Crisis, the final assault against Brother Eye in orbit. Just after the strike team managed to knock out Eye's stabilizing unit to send it hurtling to Earth, the defense systems on the satellite activate to bring Batman, the Eye's original creator, down with it. All the while, the Eye is yelling at his "father", saying that after everything, Batman could never trust anyone ever again. Just then, a green aura appears and Hal Jordan (the one guy who best exemplifies the original reason Bats made Brother Eye)comes to get Batman. As they are leaving, Batman says: "You're wrong. I'd rather take my chances." To the satellite he created because he lost trust in his peers. That's gotta hurt.
Sgt. Rock: A Peace on Earth takes place on December 24th, 1944 as Sgt. Rock walks down a lonely, foggy road with liquor to bring back to his fellow men. On the way, he passes another soldier and neither realizes that they're on opposite sides until they're face-to-face. In their shock, they both fall over...but Rock gets back up laughing, and the German asks for a cigarette. They sit down, drink, they smoke, they talk about how they both lost fathers in the first world war, they drink some more, and then they rise again. Before they part, the German warns Rock that he was ordered to shoot on sight. They both arm themselves and the sound of gunfire fills the air...only for the next page to show they both fired in the air. They wish each other a merry Christmas and depart. The best part? The subtitle "Based on a True Story" isn't stretching the truth.
In fearful day, in raging night With strong hearts full our souls ignite When all seems lost in the War of Light Look to the stars - for hope burns bright
From the end of 52, one sentence from Rip Hunter to Booster Gold: Welcome home.
And from further in the ending, the reveal of Elongated Man and Sue Dibny being together as ghosts. "Honey, your nose is twitching. Seeing them together after all he went through in his arc is just such a beautiful moment.
From Booster Gold's own series, the #1,000,000 issue; Booster has attempted to use his time-travelling mission to save the life of Ted Kord, the former Blue Beetle and his best friend; Ted, however, heroically sacrificed himself to stop a Big Bad, reverting things to the way they were. As a result, Booster is embittered, seeing his life as worthless and meaningless; he makes all these sacrifices, but no one will ever know. Then, he encounters Batman, who reveals that he's discovered that on a previous mission, Booster attempted to prevent Barbara Gordon's paralysis at the hands of the Joker, suffering greatly as a result. Batman then offers to act as a confidante to Booster; whilst he acknowledges that they'll never be close and that Batman will never be Ted Kord, he will at least be there for Booster should Booster needs it.
The fact that Ted died, in part, because Batman wouldn't listen to him, makes this less or more wibbly.
One of the earlier issues in the Green Arrow/Black Canary series. It involves someone being hurt, dying and someone cradling him and trying everything but there's nothing to do and he's far away and when there's no way left he just raises his head and shouts "CLARK!"
This story featured immediately after the Green Arrow/Black Canary engagement and marriage storyline, where it is revealed that the Green Arrow that attempted to kill Canary on their wedding night was Everyman in disguise, and Canary, Speedy, and Connor Hawke have just rescued the real Arrow from Themyscera. As they are leaving the island, a single sniper shot seems to come from thin air (There is a panel of the bullet and it is actually emerging from clear sky) and hits Connor Hawke, Green Arrows son. They only have basic first aid equipment on their boat, nothing to deal with a fatal sniper wound, so Arrow just looks to the sky and screams for Clark. Clark hears him and dramatically swoops in to save the wounded, flying him to a hospital and proper medical care...and is too late! Connor had lost too much blood, been depirved of air past the point of no return, and though his heart beats and his lungs breathe, his brain-damaged coma can not be fixed. Period.
From Justice League Unlimited #28, after getting lectured by Batman after letting a crook escape and not being able to buy a Playtendo 720 for Christmas, The Flash was taken back into the past by the Phantom Stranger to see what kind of Christmas Batman had after his parents' death. When opening all his expensive presents, Bruce barely had any reaction until he got a Gray Ghost flyer and he was absolutely ecstatic. Until he saw his parents' portrait and went back to being gloomy. Then, back to the present, Flash presented Batman with a special present.◊ Then, we find out that Batman also got Flash a present also.◊
Phantom Stranger: Here is a gift from one who knows what it means... to be a stranger.
The "To be a stranger" line is significant because Arion's motive for antagonizing Supes is that since Superman is an alien, he is a stranger with no right to interfere with our lives. The Phantom Stranger tells him, You Are Not Alone.
The DC Super Friends comic had a story where The Queen Of Fables separates the Super Friends and traps them in various stories. Superman lands in the tale of John Henry. As the contest against the machine begins, Superman begs John to stop, as he has read this story and knows that John will die at the end. John makes a speech about how he has to stand up to the machine to prove that machines can't replace people. Superman then picks up a hammer.
"It doesn't mean you have to stand up to them alone. Let's show them what people can do when we work together!"
And here we have Garth Ennis take a break from his rampant cynicism and hatred of superheroes to let Hitman give some props to Superman: ◊
Despite it's being a Silver Age series, Super Boy occasionally had some touching moments. One of the most notable was when Superboy has a dull day and is convinced that he didn't do anything noteworthy. All he did was save a toddler from a well, help a teenage girl from being humiliated at a party, and rescued a reporter's briefcase. As it turns out, the toddler was Jimmy Olsen, the girl was Lois Lane, and the reporter was Perry White. Aww!