I thought this was cool: http://blogs.technet.com/grouppolicy/archive/2009/05/12/group-policy-at-tech-ed-2009-mark-russinovich-demos-group-policy-powershell-cmdlets.aspx
Mark demo’d Microsoft’s upcoming Group Policy PowerShell cmdlets that will ship with Windows 7 and Server 2008 R2. I think its cool primarily because it validates the work we have done at SDM Software over the last couple of years to provide automation for Group Policy, with both our free GPMC cmdlets and our commercial Group Policy Automation Engine. Microsoft is providing something like 25 cmdlets in Windows 7 and Server 2008, R2, that will provide much of the same functionality as our free GPMC cmdlets. In addition, they are providing a set of what I call "teaser" cmdlets for automating a small portion of GP settings. Specifically, they will be provide a set of cmdlets to get and set registry policy (i.e. Administrative Templates but without the ADM or ADMX view of the world) and also registry settings through Group Policy Preferences Registry extension.
The cool part about this is that it gets people thinking about how they can automate the auditing and management of GP settings using Powershell. And when they run out of capabilities with the built-in cmdlets, well our GP Automation Engine will be waiting in the wings to provide the ability to script reading and writing of not just Admin. Template policy, but also Security policy, Software Installation, Folder Redirection, IE Maintenance, Scripts policy and all of GP Preferences.