Don't mess with Scrat.
- When the kids that Manny is narrating a story to press the Trauma Button of his deceased family, Diego immediately steps in to scare them off (so Manny doesn't have to re-live the trauma of his deceased loved ones), proving how much the Herd cares about each other.
- Scrat saves the day in this movie. Yes, Scrat.
- Him beating up an entire school of piranhas as well.
- Sid's tribal-dance number with the pygmy sloths.
- "Food, Glorious Food" sung by the Vultures.
- The dam breaking is incredible to see, with a massive tsunami of water destroying the thin wall of ice that finally gives out, and then surging across the valley at frightening speed.
- Diego finally overcoming his fear of water to save Sid, Eddie and Crash.
- And afterwards, when Diego reminds Sid that most animals can swim even as infants (something Sid taught him earlier), Sid responds, "Yeah, but not tigers. I left that part out." Meaning that Sid of all people pulled off a hell of a Stealth Mentor role, and that Diego managed to figure out swimming despite it not being instinctive for him. Even Diego is surprised when he realizes Sid's technique.
- Diego orchestrating the others to cooperate when they're stuck on some precarious rocks stacked on top of one another.
- Manny manages to defeat Cretaceous and Maelstrom while also saving Ellie from drowning:
- After Maelstrom drags Manny underwater and the two start slamming into him, Manny hits a solid kick to Maelstrom, which gives him an opening to resurface for air.
- After Sid warns him of the two coming after him, Manny holds his breath, swims back down to the log wedged into the boulder, and tricks them into hitting the log and removing the boulder, freeing Ellie and ending their threat.
- A veritable army of mammoths arriving at the end, after an entire film of Manny (and later Ellie) believing themselves to be the last ones, accompanied by a magnificent soundtrack
.- What's more awesome is Manny choosing his friends over the mammoths, and none of them seem to hold it against him and even cheer him on when he and Ellie become a couple.
