Using Sketchcast in class

I was trying to think of ways to use sketchcasting in class. As a teacher, I am not sure that I would share information with my students in this manner. But, I was thinking I could ask some of my students who excelled at History Day (or any other project) to tell their digital story with this tool. Then I could show next year's
8th graders the sketchcast as an anticipatory set to get them excited about the project. I like the idea of having kids explain to other kids what a project is like. I can totally see a "top 10 tips for History Day success"...