Well, I took a crack at writing a PowerShell cmdlet and of course started with a Group Policy related one. Its called get-SDMgpo and basically lets you list out one or all GPOs in an AD domain, along with some properties related to them–like GUID, DN, version and of course, Friendly Name. You can download the cmdlet from http://www.gpoguy.com/tools.htm.
Since I’m also playing around with the Quest Software PowerGUI tool, I went ahead and posted a PowerGUI snap-in for my cmdlet up on the PowerGUI site. Check it out!