If you often work on different parts of an application with different groups of document tabs opened, you may find my new Favorite Documents extension helpful:
Favorites menu in Visual Studio 2010
Favorite Documents lets you create links to frequently used code files and then quickly open them as a group or individually from the Favorites menu in Visual Studio 2010.
Home page: Favorite Documents.
Direct download link: Favorite Documents v1.0.
Tabs Studio Blog (organizing Visual Studio document tabs) 
I really like this, especially as I’ve created a non-solution-specific folder called Solutions that I keep all of my .sln file in so I have a set of shortcust to all of my workspaces right inside VS
Comment by Stuart Hemming — September 14, 2011 @ 4:35 pm