Great free instructional videos on Youtube

I've been working more and more on technique lately. I can't fit driving to and from private lessons into my schedule right now so I've been watching/studying a lot of instructional videos on Youtube.

I thought I'd share some of my favorite instructional videos I've gone back to a few times. Hopefully beginners/intermediates can find a little nugget of knowledge in one of these.

Gary Willis - Progressive Basics (great part on posture)
Juan Alderete - Instructional Video (very clear lesson on modes)
Roger Glover - Masterclass
Billy Sheehan - Basic Bass Lesson

I'd love to see what others are watching if you care to share.