I see on the Powershell Team blog Kapil Mathur is writing about his experience with WMI and Powershell. I find when I'm out and about teaching and consulting that very few people have explored WMI and even fewer make use of it.

I think WMI is one of the most useful technologies to be able to script against and over the next week or two I'm going to look at the WMI event model and how to use WMI to invoke Powershell scripts in response to WMI events. I'll also look at how you can use Powershell to audit all of the events handlers that have been registered on your systems.