My avatar photo is by Alfred Eisenstaedt.
The photo is of children watching the story of "Saint George and the Dragon," at the puppet theater in the Tuileries, Paris, 1963. I love it because of the children's wide range of reactions. Said Eisenstaedt of the photo:
"It took a long time to get the angle I liked, but the best picture is the one I took at the climax of the action. It carries all the excitement of the children screaming, "The dragon is slain!" Very often this sort of thing is only a momentary vision, my brain does not register, only my eyes and finger react. Click."