If you have Lion and want to add a curious effect to your Mission Control, this post will interest you, since it is an effect that many of you are sure not familiar with, although I already warn you that it is not suitable for less powerful Mac.
motion blur o motion blur It is the blurring or blurring that is produced in the image by the high-speed movement of objects. This occurs in the focus limit area of the camera both in the photographic image and in videos or animations.
To activate it, simply open Mission Control and press CMD + M. Now you have to exit Mission Control or move between Spaces to see how it works, although from MacOSXHints they warn us that it is quite unstable, so I do not recommend its frequent use.
By the way, it is also deactivated with CMD + M.