Remember those old-time PC games with a TBIC (The Boss Is Coming) key? I'm thinking it came out with "Leather Goddesses of Phobos" or soon thereafter. Anyway, just punch that key and suddenly the screen would show a display that looked like something you were being paid to do.
Of course that's not necessary with Windows if you know what you're doing - a productive screen is just an alt-tab away, or you can kill the whole app with an alt-F4.
But now we have the Web Fire Escape! Punch the icon and get switched instantly to Google or whatever you configured it to point to. Obviously everyone needs this - get it here.