In my way of pressing random buttons to see what happens, I've just learned how to do something in a much more efficient way. Often I need to see my desktop, but with a screen covered in windows it involved pressing cmd-H lots of times, then the hassle of getting all the windows back again.
While idly prodding the F3 key on my mac and watching the pretty animation I discovered cmd-F3 shunts everything out the way so I can see my desktop. I then pressed the other modifier keys to see what else happens. You're all Mac owners so you know what they do, so maybe you can explain the point of pressing Shift-F3.
Press F3, all windows get tiled on the screen. Press Shift-F3 and the exact same thing happens, but slowly. It seems holding shift down makes everything happen slower... I see no point beyond blatant eye candy to show off to your friends with
Apple are strange. They've always been big pushers of the GUI, giving the impression using the keyboard is not the best way to interact with your computer. And yet OSX is filled with really useful features that can only be activated by pressing key combinations. Even stranger, I know more OSX keyboard shortcuts than I do in Windows... they seem to make more sense on my Mac than in Windows; I'm forever using cmd-W and cmd-Q, they've become a vital way of using my Mac, but in Windows I still press the 'X' in the corner of the window (or sometimes even double-click the icon in the other corner!).
You've discovered something that all Mac users discover but keep quite.
