I found this while working on the lesson interview with a teacher at my school. I think this is an amazing resources. It guides ELA teachers (other could use it as well) looking to use technology in the school. This resource provides Lessons, activities, tech tools, and screencasts instructing a teacher on how to use the tools.
It seems that Doceri reigns supreme for teacher creation of videos while it’s a tie between ShowMe and Educreations as to which is the best choice when it comes to student creation: