Possible to add Show Desktop option to Switchboard->Desktop->Hot Corners?

I am one of those individuals who revels in shortcuts to everything I can do, and one of my favorites from when I was using other desktop environments was to assign a key or hotcorner to minimize all current windows and show the desktop. When you've got like 7 terminals open and two web browsers with a dozen tabs, sometimes you need a quick way to get all the clutter out of the way in order to start something new!

Thanks for all your hard work guys!