I hate the Windows XP Start Menu. It tries to be too smart, and never really works. I usually switch back to Classic Menu on any machine I start using. I even hate the Vista Start Menu more so. Heck I hardly use Vista anymore!
Anyway, I'm a keyboard guy, I love VIM, and I find myself pressing Windows Key + R to get a Run command and then typing notepad or calc to start some applications. I would rather not use the mouse whenever possible.
So if you are remotely like me and would like to start your applications and even documents with the keyboard, then you really should give Launchy a try.
In a nutshell, after you install Launchy, you see nothing. It is running in the background waiting for you to press its hotkey, the ALT-SPACE is the default. Then you can type a program name or a document name and it will start it for you. You can even let it look for MP3 files, for other documents, or perform a Google Search all from that simple bare-bones interface.
To get menus of all of its options and customize it, just right-click the Launchy window, around it's border or anywhere except where you'll enter text.
Don't wait, go and get it now!