Discussion and use of the Tutorial at Microsoft
Sara Ford, tasked with the intriguing task of helping Microsoft teams to open source some of their work, has posted a video of her presenting to her team, based in part on this tutorial. There's some discussion over there too. Great to see ongoing discussion.
The link address is: http://port25.technet.com/archive/2006/09/11/Lessons-from-OSCON_3A00_--The-Powertoys-Team-Learns-How-To-Go-_2200_Open_2200_.aspx