Where did that PowerShell come from?

Today, while working on my laptop (Vista), I accidentally pressed a key combination (Windows logo key+1) that caused PowerShell to fire!

What gives? I don't recall configuring keyboard shortcuts for any of my applications. I checked all of PowerShell's shortcuts and found that none is configured to use keyboard shortcuts. I checked for that keystroke on my desktop computer (XP) and it didn't work.

OK, there must be an application to list all registered keyboard shortcuts, so I googled for one. At first glance, I didn't find any. Then I made a second search for a complete list of Windows shortcut keys (I should have done it first). I came across number of articles and couldn't find a clue in any one of them.

Finally I found the answer on Windows Help under the section: Microsoft keyboard shortcuts. It appears to be a Vista thing:

"Windows logo key with any number key - Open the Quick Launch shortcut that is in the position that corresponds to the number. For example, Windows logo key +1 to launch the first shortcut in the Quick Launch menu."

That makes sense... the Quick Launch toolbar shows that PowerShell IS the first shortcut...damn slick!