Videos are, in effect, changing education and learning. We are now past the point of debate. Learn five reasons why you should consider using Youtube in your classroom.
http://mindshift.kqed.org/2011/09/five-reasons-why-youtube-rocks-the-classroom/
DawsonITE is a blog devoted to Educational Technology. It's compiled by Rafael Scapin, Coordinator of Educational Technology at Dawson College in Montreal (Canada).