Reader Anthony recently wrote me about the OS X slow motion features. That is, if you hold down the shift key while minimizing windows or activating expose' or spaces, everything moves very slow. It really gives you a better idea of how the animation works in terms of both motion and fade.
I always thought of it as eye candy but Anthony makes a good point. When teaching your switcher friends how windows minimize into the dock, slowing things down can be helpful to demonstrate exactly how it all works.