If you want to minimise all the many windows you have open except the most important one your using? In Windows 7, you can grab the top of the window and shake it about to scare away all of the other open windows and they all be minimised. see MS demo
Windows 7 has simple new ways to manage open windows. For example, with Snap you can arrange two windows side-by-side just by dragging them to opposite sides of your screen. see MS demo
Windows 7 lets you peek behind open windows to get a quick look at your desktop. see MS demo
With those XP applications that will not work under Windows 7, you can download XP Mode free from the Microsoft website and run XP applications in an emulated XP environment in Windows 7.
Windows 7 Editions with this feature
Open files you use regularly in just two clicks with Jump Lists on the improved taskbar.
Instantly locate and open virtually any file on your PC, from documents to emails to songs, right from the Start menu, with Windows Search.