Carl freeing Kevin, Russell climbing the hose to the house after hearing Carl call out as he and Kevin try to escape from Muntz, "Caw-caw raar! Caw-caw raar!"
Russell's "YOU LEAVE MR. FREDRICKSEN ALONE!"
Carl stripping his house of all its furniture (including his and Ellie's armchairs) to make it buoyant enough to fly again, then donning Russell's Wilderness Explorer sash and shouldering his cane to pilot the house.
Following a Crowning Moment of Heartwarming, Carl realizes that all his beloved mementoes of his wife are just things, and as long as he has his memories of her that will be enough. This allows him to completely empty his house, making it light enough that the remaining balloons can lift it again and allow him to rescue his new friends. Hell, pretty much everything the guy does in the second half, considering he's in his late 70s.
And another Crowning Moment of Heartwarming, when the house lifts off and you see the pile of junk but then, right beside it, him and Ellie's armchairs carefully placed.
It doubles as a CMOH, but seeing the house sitting next to the falls after we all thought it had been lost makes you jump up and cheer at the sheer rightness of it.
Could also be a Tear Jerker if you realize that he won't ever know it got there.
Carl doesn't seem to mind though; he's moved on with the past and is heading off to another adventure. In his heart, he probably knows that the house made it.
Does the Adventure Book not count? Ellie's "Thanks for the adventure, now go have another!" will make you cry Tears of Awesome.
The same applies to the first five ten minutes of the film which shows the events before the story.
Dug helping Russell and Carl escape. He went up against dozens upon dozens of dogs who all ready hated him and would sooner kill him than see him again, and what does Dug do to this man who he just meets and calls his master? He not only leads them away from the hungry, ravenous pack of dogs to a tunnel, pushes a pile of rocks in front of said group to stop them, and stands up in front of the group of dogs himself, along with the leader, who hates him with an unbridled passion JUST BECAUSE HE WANTED CARL AND RUSSELL TO GET AWAY.
And not only does Dug pull through, he eventually defeats Alpha, puts him in the cone of shame, and becomes the dogs' new leader!
Even better is how he does it. Alpha corners Dug behind the wheel of the blimp and is about to push him out into open air, snapping at him through the spokes of the wheel. With less than a second to spare, Dug grabs the cone of shame with his teeth and shoves it onto Alpha's head, disengaging the mechanism in his voice collar at the same time. To not only beat the dog who pushed him around and treated him like dirt for the whole movie, but to do it by being clever, really is Dug's finest moment.
"Listen you Dog. SIT!"
When Carl does a short zip-line with a garden hose and his own cane!
As angsty and poorly timed as it was, Russell tying balloons to himself and propelling himself forward with a leaf blower took massive titanium balls. I mean, he's a little kid! And he's voluntarily going thousands of feet in the air without showing the slightest fear!
There's something awesome about that magnificent Zeppelin getting to fly back home again under slightly less insane command.
Meta example:In 1991, Beauty and the Beast was nominated for Best Picture. For ten years, they didn't nominate a single animated movie, and then they gave animation its own category, just to further seal the deal. Up got nominated in both categories. Take That, Animation Age Ghetto!