Hold Shift Key to Use Launchpad in Slow Motion
Like most of the other transition effects in Mac OS X, you can hold down the shift key to force the animation to render in slow motion. In the case with Launchpad, this will cause the app icons to slowly rise out of the background, or for the Launchpad screens to very slowly switch between one another.
Trying this out for yourself is simple enough, just hold down the Shift key and open Launchpad either by clicking the dock icon or using a four-fingered trackpad pinch, the slow motion effect is obvious enough that you can’t miss it when it’s working.
This is mostly an eye candy trick but it can be useful for taking screenshots of the transitions, and there’s probably some other purpose out there too.
If you were wondering, it doesn’t stack with the blur effect.