PowerCommands for Visual Studio 2008
Recently I 'discovered' this nice add-on for Visual Studio. I know, it's out for a while, but I think it's a very nice tool which helps you doing several standard tasks just a little bit quicker.
This add-in integrates into Visual Studio 2008 and will add several menu items on several places like opening a command prompt or open the folder containing the current project.
For more information: http://code.msdn.microsoft.com/PowerCommands. You can download the latest version there as well.