Crop circles are strange patterns that appear mysteriously overnight in farmers' field. They provoke puzzlement, delight and intrigue among the press and public alike. The circles are mostly found in the United Kingdom, but have spread to dozens of countries around the world in past decades. From supernatural conspiracies to Led Zeppelin album covers, crop circles have created entertainment, discussion, and endless speculation for decades. "NOT THOSE GOD DAMN SPACEMEN AGAIN!"