My colleague, Tim Heuer, pointed to a great resource for folks interested in keeping up with all of the various widgets, add-ins, and other helpful stuff for Visual Studio 2005 Team System:

Team System Widgets

Some very cool stuff there, from new process templates, to add-ins for requirements authoring.

And Ajay Sudan pointed out the VSTS Downloads Gallery, which is another good resource for Team System add-ins and utilities.