VIDDIX is an online presentation application that allows dual-pane or single-pane presentations. You upload a video into one panel and then the other panel is used for graphics, links, images, and even more video. Students can take any video with subject content...kill the sound and narrate to show understanding, while adding their own information and more! Or they can shoot their own video and add web content to enhance their presentation or to further demonstrate their comprehension. Has many potential uses for both students and teachers. I could see instructional videos or even mini review videos with links to more content for students who need remediation. Just send them to the URL, at home or during lunch, or during class.
Check out the demo I made!