I’ve thought Rob (twitter) does an excellent job with screencasts, and apparently I’m not alone. In fact, Rob has started with James Avery (twitter) a demo/training/video site called TekPub.com. Check it out. It’s built with Silverlight and ASP.Net MVC. No surprise there.. Rob recently co-authored an MVC book. Good luck to them both.
Oh yeah.. here’s a preview with a screencast on Git. Definitely check that out!