In Office 2007, Microsoft introduced what is widely known as the "Office Button". This is a button that functions in the same way as the old "File" menu, which gives you tools to work with the file such as Save As, Print, etc.
Have you ever wondered why the Microsoft Office Button flashes? Or how to make it flash again?
The first thing to know is that the Button flashes for discoverability reasons, that is, it flashes with the implicit and silent message: "Hey, I am here! Click me!". Once you have "discovered" the Office Button, it will stop flashing in all of the Office applications.
Here's a cool trick to get the Office Button to flash again by tweaking the Windows Registry. Have fun!