I've gotten a number of emails about a Windows 7 "God Mode" feature, and while I haven't had time to check it out thoroughly, it's now making the rounds internally at Microsoft too, so that (somewhat) suggests it's legit. What it basically is, is an extended control panel that allows you to control various aspects of the OS that are not typically surfaced via a GUI.
Here's how you enable it:
Create a new folder (right-click and click on “New Folder”). Right-click on the folder and click on rename, copy and paste this: GodMode.{ED7BA470-8E54-465E-825C-99712043E01C}
What comes up is a Control Panel like window with sections for Action Center ("Check security status" and so on), Administrative Tools, and AutoPlay.
Nothing major, frankly, but interesting. Use at your own risk, of course.