Jump Lists (new in Windows 7) is a quick way to take you right to the documents, pictures, songs, or websites you use each day. This feature is an updated version of the “Recent Items” feature and is now included in the right-click menus of programs and shortcuts.

To open a Jump List, right-click on a program in the Windows 7 Taskbar or Start Menu. You will see a Jump List (titled "Frequent") of the latest items opened with that specific program.

This feature is a real time saver.