I came across a cool vodcast that led me to this site: http://www.mindbites.com/

Here's the argument for using it as a teacher (really cool!):
http://3.gvt0.com/videosearch?q=jonathan+bermann&emb=0#q=mastery+learning&emb=0

It might not fit every discipline and content but it turns education on its head a bit. Kids do like to veg out after school...why not watch a lecture then instead of a TV show? The video is about 21 mins. and worth every one.