We've already got one from the second trailer, or what little we could from Alfred.
Alfred:: "Youíre as precious to me as you were to your own mother and father. I swore to them that I would protect you, but I havenít."
Not much, but judging from the look on Bruce's face, it's shaping up to be an defining scene for whatever Bruce decides to do.
The ending. All of it. From Bruce turning Wayne Manor into an orphanage to John finding the Bat Cave in the final shot and, most of all, Alfred's happy ending - seeing Bruce and Selina happy and safe in Florence. It was an ending worthy of Shakespeare - one where everybody got what they deserved. And most of all, Bruce - he got to see the people he loved most of all happy.
Not to mention Jim finding the Batsignal on top of the MCU, repaired after all these years, and touching the bat symbol as if making sure its real because he knows who had to have repaired it.
And the unveiling of the Batman statue. It doesn't matter that the citizens of Gotham don't know who Batman really was. They honor him all the same.
This is made even more heartwarming when you remember The Joker's words to Batman: "They need you right now, but when they don't, they'll cast you out like a leper." Even though they no longer need him, they still choose to honor the man that he was and by doing so, once again, prove the Joker's philosophy of human nature wrong and Batman's correct.
The look on Jim Gordon's face at this moment. Compare it with his obvious torment at the beginning of the movie when honouring Harvey Dent's memory. Seeing Batman finally get the recognition he deserves as a hero clearly provokes a lot of emotions within him, but at the same time for what might just be the first time in all three movies he looks almost at peace.
Blake and Gordon's conversation at the end following Bruce Wayne's funeral. Blake bitterly comments that no one in the city will know who saved them. Gordon, clearly satisfied that wrongs have finally been righted, corrects him: "They know. It was the Batman."
The Reveal of Talia Al Ghul manages to simultaneously make you say "Oh, Crap!" and "Awww!" Ra's Al Ghul's child, who escaped the inescapable prison, wasn't Bane but Talia. Bane was the one who helped her escape, sustaining the injuries that necessitated the mask as a result - she came back with the League of Shadows and rescued him, and he's been acting as her loyal servant ever since. The tender regard they show for one another as this is revealed is heartwrenching - which is amazing, given that they're simultaneously planning to string up Batman's corpse.
This also puts a new spin on Bane appreciating the boy singing the national anthem at the football game.
For all that happens later, Bruce's romance with Miranda/Talia is full of it. She helps bring him back into the world, and their Big Damn Kiss in Wayne Manor is pure heartwarming. When she suggests they run away together, and Bruce instead goes to fight Bane for the first time, it veers into Tear Jerker territory. Even knowing that he was responsible for her father's death, one can't help but feel that, for that moment, Talia honestly hoped Bruce would return her feelings, leave Gotham, and be the person her father wanted him to be.
The Ominous Arabic Chanting featured in the trailers whenever Bane was shown was actually encouragement for Bruce, climbing out of the pit.
The first set of inmates in the Pit were at the very least desperate and resentful, and refused to let even an innocent child escape, let alone help in the effort. The second set of inmates were still desperate and dejected, but they tried to help in the only ways they could. Even in desperate circumstances people can choose to be better; the second set of inmates already chose to defy Bane once and didn't completely surrender their ability to act nobly even in an even more desperate and bleak hellhole than the prison originally was.
Just before flying off to detonate the bomb, when Batman hints who he is to Commissioner Gordon (slightly paraphrased):
Batman: A hero can be anyone. Even a man doing something as simple and reassuring as putting a coat around a young boy's shoulders, to let him know the world hadn't ended. ... Gordon: ...Bruce Wayne...?
Can be even better, as it shows that both of them remember that small act of kindness from probably around 30 years prior.
Another sweet way to look at it: the Batman considers Gordon to be his hero.
On the meta side, there was speculation that Robin was too unrealistically bright, in all senses of the phrase, and would never make it into the grim, realistic Dark Knight Saga. Nolan and Bale themselves confirmed these rumors. But at the end of The Dark Knight Rises, John Blake is revealed to be a composite of Dick Grayson, Tim Drake, and Jason Todd. Not to mention his real first name is Robin. In the packed theater that this troper attended, everyone cheered.
A small one that's easy to miss. Bruce, after climbing out of the prison, throws a thick rope down to the inmates.
Also, the prison doctor, who'd befriended and supported Bruce, getting teary-eyed with happiness at Bruce's successful escape.
When Bruce escapes, the inmates all cheer.
And the fact that what they are chanting is simply, "Rise." Coupled with how they cheer, it shows just how much they wish for someone to leave the hell they lived in.
Batman is carrying a bomb away from the city to his death. His last words? Telling both Gordon and Selina that they are just as good as he is, and he has faith in them.
By showing up in the cafe with Selina, Bruce has not only forgiven Alfred for lying, but he has taken the advice to move on and be happy.