i know about Exposé very well. now my left corners are set as Exposé and if i move my mouse there everything get Exposé ...
and command+H is know too but the fastest and easiest way is minimizing with mouse. its very very faster and easier because i don't need to move my hand to keyboard or Exposé applications and find the app there and click on it to show it ...
all these ways take time ...
if click on icon act as maximize and minimize then i save a lots of time daily ... !