Aero Shake feature in Windows 7
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. As a member of the Windows 7 Desktop Experience Team, Zou worked with his team and others for three years to develop, test and refine high-profile features such as the Start menu, and new Windows 7 features such as the taskbar and “the Aeros” – Aero Shake, Aero Snap, and Aero Peek. You can also enhance the Aero Shake feature. While Windows 7 Aero Shake minimizes other windows when you shake one, AquaShake a window and it will remain always on the top. AquaGlass makes the windows transparent when you move it, thereby permitting you to see what is behind. Go here if you need to disable Aero Shake using Group Policy.