Incredible blackboard drawing skills. How do you compare?

The electronic whiteboard has become really popular as a replacement to the traditional blackboard and chalk, but have a look at these two videos of talented teachers. Their blackboard drawing skills are incredible.

The first video above is of Alexander Overwijk who tells the story of his unique talent of drawing perfect freehand circles.

This second video is a compilation of Professor Walter Lewins and some of his lectures at Massachusetts Institute of Technology (MIT). He draws some of the best lines, especially dashed lines – so fast that his hand isn’t even moving up and down to produce the dashes.

How do your blackboard drawing skills compare, or have blackboards been relegated to the back of the store room in your school?