These were made by a member of a Dutch guitar forum. Twelve of them posted in the past week. He does a very good job of explaining.
Here's the first.
http://www.youtube.com/watch?v=6OcmKU5rblA
Here's the latest.
http://www.youtube.com/watch?v=SfkX-fgmIbc
He does indeed do a great job of explaining things.
When I first heard his voice it reminded me of Dr Sbaitso.