Recently, I discovered that one can hold a window while switching Spaces in Leopard. The window can then be dropped onto any other space. This, of course, isn’t the only way to move a window to another space. But, I like this better than dragging windows off the screen.

Here’s how it’s done:

1. Grab the window you wish to move by clicking and holding with the mouse.
2. Switch spaces directly (default: ^ Number Key) or with the arrow keys (default: ^ Arrow Key).
3. Drop the window on the desired space.

The movie below shows these steps in action. On my keyboard, using the arrow keys to switch spaces is cumbersome, so I usually use the ^ Number Key combination to switch directly to the space I want.

If you can’t see the movie above, you can download the Quicktime file directly.

For more tips, take a look at this Spaces tips screencast (the production values are much higher than my Quicktime movie).