Found this little guy when I was leaving the office one night and decided to shoot a few portraits with my little point and shoot camera.
A couple times I got too close and he did this:
Note: in this shot he was facing the other direction from the portrait above. I probably couldn't get that shot again with a point and shoot if I tried 1,000 times. I think would fall into what Henri Cartier-Bresson calls The Decisive Moment.
From the Wikipedia article:
"Photography is not like painting," Cartier-Bresson told the Washington Post in 1957. "There is a creative fraction of a second when you are taking a picture. Your eye must see a composition or an expression that life itself offers you, and you must know with intuition when to click the camera.
That is the moment the photographer is creative," he said. "Oop! The Moment! Once you miss it, it is gone forever."