Animoto is a great way to introduce students to slideshows other than the Powerpoint format. Because Animoto allows very little text, this would encourage students to learn more about the topic of their presentation since they can't just read off the slides (like Powerpoint). This goes both ways: the teacher can teach more about what's on the slideshow rather than the students just reading off of it. Also, this type of presentation addresses different learning styles than the traditional lecturing does. Visual and auditory learners will love presentations like this.
Also, you can't deny that this type of presentation is just plain more fun and more interesting than a Powerpoint presentation. You can include music in the background, the way the pictures move around and change are visually interesting, and Animoto presentations will definitely grab students' attention better than Powerpoints.
Animoto presentations could be used for just about anything. They can function as the main presenting material, or they can function as supplemental material. They can be fit to any topic and time period. They are fun, colorful, visually interesting, and easy to make. Teachers and students alike will love these presentations.