New Mac User

With Spaces, Mac users can finally enjoy what Linux users have had for years: virtual desktops. However, Leopards implementation has a neat trick that I have yet to see in any Linux distro. You can now perform “window dragging” between the desktops without having to use the multi-pane view (ie. 4 screen view).
Simply click on a window as though you were going to drag it. While continuing to hold down the mouse button, press control+<an arrow key> to move that window to another space. Then let go when you are done. Isn’t that a much easier way to manage window clutter?

From Leopard Tricks, Tips, and Tools