StartMenuEx, or smx (pronounced semex), is a replacement for the Windows Start Menu. It is fully customizable, and also supports user created themes and plugins.
-Why should I use StartMenuEx?
Smx takes over your Windows Start Menu, and allows you to have only the items you want in there, allowing you to find programs, browse your computer, open MSN Messenger contact windows and many other tasks much more efficiently than usual.
Because smx is totally customisable, it is only limited by your imagination.