It's beyond cool to watch them move. I'm jealous of how tough and sure-footed they are. They climb straight up trees and vines like it's nothing, as opposed to me, who thought that the rope in gym class was some kind of torture device. The strength they have in their rotator cuffs is ridiculous. Even Oscar is holding onto a vine with one hand, slowing spinning around, ass over head, staring at the ground.
What really impressed me was how effortlessly they used their surroundings as tools. They made treetop nests/beds in about two minutes, used twigs to eat as many ants as they pleased, and the older chimps made cracking nuts look simple (as opposed to the inexperienced youngsters), often getting them to split with only one attempt.
Chimps are cool, plain and simple.