Wasn't sure if anyone has posted this yet.. so here it is.

Madotate is a Japanese window manipulation tool which has started to be developed since 1999, and perform function similar to Microsoft Task Gallery which has since stopped development but its ideas may have contributed to the development of Windows Flip 3D. Madotate a button to the standard set of buttons for minimizing, maximizing, and closing windows on the title bar of open windows. The new button, when click, will minimize and flip the window into a 3D desktop space, with its lower half receding into the distance. Other than that, Madotate also allows the flipped or flattened windows with its own title tab to be docked in 3D to the left, right, top, bottom of the screen like stacked transparent glass window panes and or arranged anywhere to your liking.

Heres a very cluttered example of what it can do.