VS 2005 Design-Time Expression Evaluation
FYI, I have written an article for Universal Thread magazine on design-time expression evaluation in Visual Studio 2005:
http://www.utmag.com/wconnect/wc.dll?LevelExtreme~9,7,10,857
Design-time expression evaluation is a great new feature of VS 2005 that allows you to instantiate and test your application classes at design time by means of the new Object Browser and the enhanced Immediate Window. For those of you who come from the FoxPro world, this is very much like FoxPro's Command Window.