Software Carpentry Screencasts

Chris Lasher, who audited the Software Carpentry course long-distance last time around, has put together some screencasts to go with the first few lectures: I think this is very cool --- if you have feedback, or want to praise him (hint, hint), please drop him a line. I would also be interested in hearing how useful you find these --- if there were twenty or thirty covering the whole course, would you actually watch them? And would they help you understand the course material?