Stupidity

This documentary about stupidity tells us the history of the word "moron", the difference between stupid, moron, smart, intelligent, genius and questions the regular practice of classifying peoples intelligence through standardized IQ tests. Of course also Mr. Bush is examined in this report. A well educated guy who, nevertheless, acts in a completely dumb way -- or at least wants us to believe so.
Albert Einstein said:
"Only two things are infinite the universe and stupidity.
and I am not sure about the former."

What do you do that others consider stupid ?