The new version of the TFS 2005 Powertool includes a "Best Practices Analyzer" that can tell you what's wrong with your TFS installation. Another new feature are Work Item templates that allow you to prepopulate work items with data. This can save you tons of time if work item data tends to be repetitive. Check it out here: http://msdn2.microsoft.com/en-us/teamsystem/aa718351.aspx
PS: the VS 2008 version of the Powertool are planned for December.