totally depends on the kiddo. Monsters Inc. for instance my ds1 did great with, but the first few times he wanted to sit on my lap in the beginning scare scene. Ds2 likes it a lot as well he was never scared or anything I would try to cuddle him and he'd push me off. My littlest Ds3 it scared the bejeebes out of and if he sees the dvd case he cries.

He is very very sensitive to images and sounds and cartoons and such often frighten him.
Three kids raise in the same home having very different reactions to the same movie. Only you know your kiddo and what they can handle and what their sensitives are when it comes to what movie content is appropriate.
If we are going to see a movie in the theater and I don't already know what is going to happen, I have had good luck so far reading the Movie Mom reviews. It's pretty detailed in things that may or may not upset children.
ETA: All three of my kiddos loved the Incredibles. Actually for my youngest I went out one evening after they were in bed leaving the kids with my parents. I was delayed in getting home and he woke up and was very upset I was not there to nurse him, My parents were trying every thing to calm him, but it was about a 20 minute trip for me to make back and in the end they were able to put on the Increibles and he calmed right down until I got home.
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