Remember the awesome motion blur effect from the October 2010 Lion demo? You know, switching between spaces and fullscreen apps? You can have it back and as a bonus, it can be applied to Launchpad too! To activate it simply open few windows (to be safe) and then go into Mission Control. While there, press Command + M. Have fun! Also works with Launchpad! Pretty much the same way, open Launchpad and press Command + M. And while you're in Launchpad press Command + B for a cool little bonus!