I like the style and I appreciate the idea. In fact, I’ve been working on something in the same direction. So, here are a couple of things that I prefer to do differently. First, these are video <i>lectures</i> but without actual students present. As a result, he is essentially talking to himself. I noticed that this causes him to skip some details that students might be wondering about. I prefer to start with actual lectures and initially put them on the web as pdfs (<a href="http://users.marshall.edu/~saveliev/Teaching/Fall09/m430/updates.html" rel="nofollow">http://users.marshall.edu/~saveliev/Teaching/Fall09/m430/upd...</a>). Then I transcribe them to an online version (<a href="http://inperc.com/wiki/index.php?title=Introductory_algebraic_topology:_course" rel="nofollow">http://inperc.com/wiki/index.php?title=Introductory_algebrai...</a>). This is the second problem I have with his approach. Video just isn’t enough. I don’t’ have to explain to you what video doesn’t have and html does: searchability, cross-linking, speed of download, the ability to <i>read</i> and work at your own pace, etc. Certainly, my way is much slower.