For those TFS users who frequently open multiple branches of the same code and need a visual indicator of which Branch and Workspace you are currently in, TFS Solution Info Tool Window will show you what you need at a glance.
Here is a sample view:
Please note that this is very early release of the control.
The code is here: http://tfssolutioninfo.codeplex.com/
To show the Window, use the Menus: View->Other Windows->Tfs Project Info (yes, old name.. I'll be changing that)