Here is my Animoto project about my classroom. You will see that I have flipped my classroom and am now in the iPad Academy! Lots of new things this year that I am trying and it really is a blast learning new things and seeing how much my students are benefitting from multimedia in the classroom.
Animoto would be a great tool in the classroom to use as an introduction to new topics, review of topics, or even to have your students create one to show what they learned on a topic. Very easy and fun way to put things together. It is very easy to use so students would have no problems. Endless possibilities with a site like this!