I just discovered a wonderful resource called Wingclips! My school counselor started using this site for some of her guidance lessons. This site allows you to look up different themes or virtues, like courage, honesty, respect, etc. It pulls up all sorts of clips from various movies.
The clips are short and perfect. Plus, I've noticed that it has a huge variety of movies. Some are for older students, but there are definitely things that can be used for young children as well.
It might take some searching and digging, but you can find some fantastic clips for all kinds of lessons. I think this goes especially well with so many of our themes and ideas we cover in reading: like this one about Rosa Parks. What a neat resource!