Several people have been churning out screencasts lately, and they are really great resources.
On the Channel9 front, David Aiken recently posted two DFO Show screencasts:
In addition, Doug Finke and the Lab49 team just posted an overview of some PowerShell features – Variables, Arrays, Hashtables, Functions, and PsObject.
For interactive learners, the screencast medium is a great resource. Not only do you get to watch over somebody's shoulder, but the vocal accompaniment also provides the "Proximity Effect" benefit of working under the guidance of an expert.