Windows 7 offers some great navigation features. For example, if you use an Aero desktop theme in Windows 7, you can shuffle through your open windows quickly using the Windows key and your tab key. It gives you smaller versions of your open windows, one after another, until you see the one you want. Then just release both buttons.
Setting an Aero desktop theme is easy. From the desktop, right-click and choose Personalize. You will see your Aero desktop themes listed there. Choose one and start shuffling! Tip: Alt+Tab still works.