Hello Grant,
As a Team Foundation administrator, there are no special duties or instructions you must follow to manage SQL Server services for Team Foundation Server. Make sure that the SQL Server services are available and operating correctly according to the online documentation for each component.
Managing SQL Server Services TFS 2005.
For the maintenance tasks.
As I know you don't need to Update Statistics, Rebuild Index, Reorganize Index.
Shrink database
Sometimes you need it.
Related thread : http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1655843&SiteID=1
Hope these help.