I wonder whether the half dollar was originally design to reflect the resemblance of the moon. The profile shown on the coin is in the same direction in which I see his silhouette on the moon. I guess you have to have a vivid imagination to fill in the gaps but I'm not alone in seeing the profile of a head. Here are some links that show similar visions. Why they don't emphasize the resemblance to JFK, I'll never know.
Man in the moonmoon illusions
I stumbled onto this from an entry that popped up in google after a feeble search for info on the chinese frog that is seen from the people in the far east. http://koreanexperience.blogspot.com/2007/09/chuseok-festivities.html And, in turn, other blog entries addressing these illusions http://wfmh.org.pl/thorgal/Moon/