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Slow Motion Aero Animations
http://www.vistaarticles.com/articles/26/1/Slow-Motion-Aero-Animations
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Published on 08/4/2005
 
Slow motion animations on closing, opening, and minimizing a windows.

Slow Motion Aero Animations
  1. Open Registry Editor
  2. HKEY_local_machine > Software > Microsoft
  3. Create a new KEY called DWM if it is not there
  4. Create a new DWORD called AnimationsShiftKey inside the DWM folder
  5. Set the new DWORD that you just created to a value of 1
  6. Restart your computer for to activate

Hold down the shift key to see any of the window animations in slow motion.