You can make Dashboard appear in slow motion by pressing the Shift key when you launch or exit the Dashboard.Generally if you press Function Key + F12 the Dashboard launches quickly. When you hold Shift key the dashboard animates in slow motion, which is pretty cool. ;)


To Open Dashboard in slow motion:
Press Shift + Func + F12
 
To close Dashboard in slow motion:
Press Shift + Func + F12
 
OR

Press Shift and Click on the Background (Not on any widget)

Mac OS X graphics in cool ;) Isn’t it?