One incredible NEW feature of the Windows 7  is called Aero Shake.

If you shake any open window application fast, it minimizes all other windows, leaving this one open.

Shake the window again, and all the closed windows will open up again. This is Aero Shake.

While Win+M key will minimize all windows, this one is useful if you want to minimize all windows EXCEPT the one you are working on.

If you have liked this post, you might want to check out some more, on topics like Aero, Aero Shake, Features.