Salman Khan teaches online using youtube as his medium. To date he's recorded more than 1400 videos on various mathematics and finance topics. Here's how he does it. Watch a video below to get a sense of why he does it. I'll be trying something similar to this next semester for my module economics for business, so it's great to see these types of pedagogical initiatives in action.
Sal Khan at Gel 2010 from Gel Conference on Vimeo.
(ht 37signals)
Stephen,
Have you come across Barry Brophy and the work he is doing now at UCD?
http://www.barrybrophy.com/about.html
I think this is the new wave of education. Soon, teachers will simply teach all their classes from their home while students can connect online to their classes and learn from their bedrooms.