Sketch Theatre features videos of artists such as Gary Baseman (pictured), Travis Louie,  Shawn Barber, and many others doing some on-the-spot sketching for the camera.

My one gripe is that on the main page, the videos have a “grungy” layer over them which is apparently added for aesthetic value, but really just obscures the drawings. Fortunately, if you click the “Artists” tab at the top you will find a menu of full-size videos without the grunge on them.