If you're subscribed to my blog, I think you should subscribe to Brian's--it's one of the most prolific and useful sources of Team System information. He's one of the main architects of the system.
Anyway, this is a huge power tool release coming up. At the very least, because it has an explorer integration. The team management support, IM integration, and downloadable policies and custom controls are super additions too--just the kinds of things that people are asking for.
See bharry's WebLog : Preview of the next TFS Power Tools release for more information.