In Windows 7, the taskbar has become a super Taskbar. All things are @ tips and fewer clicks are required for access to anything. Features of Windows 7 Taskbar.
1. You can pin frequently used programs to the taskbar
2. You can even pin a specific document to a program using Jumplist feature. Any frequently used document can be pinned to an application. Right click application icon in taskbar to access it.
3.You'll see live taskbar thumbnails of each open window so you can keep track of the files and programs you're using and select them more easily. Rest your cursor on the thumbnail, and Aero Peek brings the full size window into focus.
4. You can also close a window directly from the thumbnail preview window.
"Windows 7 Tips: Super Taskbar"
Reference : www.WindowsVJ.com