present windows - all desktops

In Mepis 11, I have KDE4's screen edges set so that I can move the cursor to the bottom right corner to bring up the desktop grid. This is quite useful for taking a look at what's on each virtual desktop and moving quick to a different desktop.

But I have the top left corner set to "Present Windows - All Desktops." This one gives me a look at all open application windows, and of course I can click on any one of them to go to that window.

That's just a tool to use in addition to the desktop grid and the panel's Task Manager. Here's the Screen Edges GUI used to set it up (System Settings > Window Behavior > Screen Edges):