My DS is VERY sensitive too. When he was a baby we were watching Chicken Little and he started sobbing over the part where Chicken Little has his big discussion with his Dad. I should have known he was a bit different then!
He just turned 5 and can't really watch any Disney movies either. He pretty much doesn't want to watch anything because he isn't sure about them. We did get him to see Toy Story 3 and he did pretty well. The end was a bit scary but, he sat on my lap and did ok. That was his one and only trip to the movie theater.
He does much better with Sprout/Nickelodeon/Disney Channel stuff and the longer shows made from those like the Thomas DVDs etc.
Nature stuff we have a hard time with too. He gets quite upset about animals eating other animals.
