Close All the tabs in Visual Studio 2008

PowerCommands 1.1 is a set of useful extensions for the Visual Studio 2008 adding additional functionality to various areas of the IDE.

PowerCommands allows you to:

• Close All the tabs in Visual Studio 2008
• Copy reference dll from one project to another
• Open file's containing folder from Solution Explorer
• A bunch of other useful functions...

Reference:
PowerCommands for Visual Studio 2008