Of all the video sites I looked at the one I liked the most was Animoto. Creating a video using pictures and sound was done relatively quickly and easily. I think students would be able to put projects together without too much fuss using this site.

Here is a video I made using Animoto:

http://animoto.com/play/LauegHylHBj1Yt5easwDDA

The next site was Pixiclip. I liked this site because you can use it as a whiteboard and write or type text too. Here is a video created using Pixiclip:

http://www.pixiclip.com/beta/e/ezwz

I also looked at Jing and played around with that and it is very useful for making screen-captures. The only problem I had with it was that you had to download the program. I know in some school systems the computers in the classroom aren't allowed to download and install programs.

Wideo is an interesting site to use because it allows student so present their videos using one of the many cool templates they offer such as iPad/iPhone app or infographic.

POWtoons is another one that students would find fun to use as well. The site allows you to create a cartoon presentation for you project.

There were also a few phone/tablet apps that were cool.

My favorite was Sock Puppets, because it was sock puppets. It was pretty easy to use to make a short video with some sock puppets talking.

Videolicious was pretty easy to use and making videos was done with little trouble.