I was just browsing the Discovery Educator Network's "Streaming A to Z" blog, and found an entry about how to do the "green screen" effect in Windows MovieMaker, something I've been wanting to try. As you will see by
reading the post, it is actually a BLUE screen/chromakey feature. Links to step-by-step directions with screen shots are available, shared by Jen Dorman.
Why would you want to do this? How cool would it be to be able to add yourself or your students to an existing DiscoveryStreaming Video? You can swim with sharks, interact with past Presidents, and explore the rain forest!