The ending to the world of Avatar: The Last Airbender. It's a Golden Ending, with John and Alicia regaining control of her bodies, Azula (now with the Power of Love) and Ozu getting new bodies, an Elemental Republic being instated, and Azula finally having a good relationship with Zuko. It's so golden, that even Tsukasa doesn't want to screw it up. Even after the bullcrap that happened after with Lilly's death and the meeting, this became a good ending.
Nanoha calming down Homura with a good ol' cool down hug. This, along with her flashback to her last moments with Madoka caused her to downright cry into her chest, all the while Nanoha keeps on comforting her.