Some say that big Obama grin is fake, and even speculate that Obama is a robot. A stunning video by Eric Spiegelman offers more evidence, time compressing posed photos taken with 130 world leaders at the UN. His 22 second video below really does show that practice makes perfect.
Update: comments suggest this may be a hoax. Perhaps someone can find the archive of ceremonial photos of the president, and we can post a link, so readers may judge for themselves.