I liked this video about changing the education paradigm. It will be a cold day in hell before this actually happens, I think, but its nice to think about.
I'd say that pretty much everyone who has ever touched a computer is probably already familiar with Youtube. I've used Youtube several times in my physics class so that my students can observe demos that we do not have the equipment to perform.
My chosen link: http://www.go2web20.net/site/?a=GoAnimate
GoAnimate is animation software that could feasibly be used to create a video in which your students learn something. I could imagine it being used to liven up physics problems and to help kids break them down into simpler terms. I've toyed with the idea of creating animations that explain physics problems, and maybe I will act on that when time permits.