Aero Peek is a cool new feature in Windows 7 that gives you X-Ray vision! By hovering the mouse over the small bar on the right hand side of the taskbar, you can temporarily see behind any open windows, to the desktop. Aero Peek is also used when the Alt+Tab combination on the keyboard is used & also when you hover your mouse over a Taskbar preview. By default, the delay from hovering the mouse on the bar on the Taskbar to showing the desktop is 1 second. This guide will show you how to speed things up (or slow it down).