Visual Studio 2010 has pretty cool Windows 7 integration. It gets jumplists right, for example:
But it could do more, and this little add-in adds some fun extras.
Here's a taskbar progress bar overlay during a build:
(If your build results in errors or warnings, you'll also get a taskbar icon overlay when it's done letting you know about them.)
And here we have handy thumbnail buttons - for build, debug, and start without debugging:
Give it a whirl! You can download it from the gallery, or use Tools, Extension Manager, Online Gallery right in Visual Studio and search for Taskbar.