I see that you picked some of the most climatic moments of the movies.
And welcome to PIxar Planet. Artemis.
Thanks for the welcome! 
And yeah, those moments are just the natural thing to go to, I guess.
That is true. But are there any others besides the climatic moment where you cheered as well?
That scene is so cool! 
In my area, no one cheers during a scene. We just stay quiet. What a boring place to live 
Toy Story – Either the first five minutes or every scene in Sid’s house.
A Bug’s Life – When everyone gets together to build the bird contraption.
Toy Story 2 – Geri fixing up Woody.
Monsters, Inc. – The door scene! The door scene! THE DOOR SCENE!!!
Finding Nemo – Riding the current with Crush or [spoil]when the tank fish “escape” while still in plastic bags. “Now what?” Haha![/spoil]
The Incredibles – Dash running on water.
Cars – [spoil]Lightning McQueen braking before the finish line[/spoil]
Ratatouille – By far, one of my favorite scenes from any movie ever made was when Anton Ego ate the ratatouille dish. His reaction was surprising but completely relevant and touching at the same time. Oh, and it was really funny seeing what happened to Skinner and the health inspector. That always gets a laugh out of me.
Wall-E – Wow, I don’t know yet! Maybe the whole hands-holding part.