Pretty much what it said on the tin. Does anybody watch these? How useful do you find them? Can you recommend good ones for concept art/painting?
Personally I love the idea of being able to sit by the artist's shoulder as he's working. However for some reason I can never sit through more than 45 minutes of one without falling asleep. For example Syd Mead, a legend in his field, has the most monotonous voice ever!
So far I can recommend Syd Mead and Carlos Huante. I watched their entire series and found them immensely helpful.