Microsoft Digital Media Keyboard 3000 for $11.99 shipped after code KB225FS.  Here is a screenshot for your reference.  It features Media Center functionality to control media activities with the touch of a button, including hot keys, zoom, "My Favorites", enhanced F keys, Windows Flip 3D key, and more.  Note that it comes in OEM packaging, which means no pretty retail box and marketing materials.  Most places have it for about $25.