A number of interesting phenomena have been reported in the vicinity of the crop circles. Evidently they play havoc with the electronics in cameras, recorders, even in the instruments in aircraft flying directly overhead. The formations can also disrupt service to cell phones, but oddly enough they seem to resume working just fine if they are held outside the circle.
There have been reports of spontaneous healings due to special frequencies found within circles (however, that's based on anecdotal evidence and I would like to see some solid research before forming an opinion). More immediately believable to me are the reports of circles forming in response to human thoughts. For example, it was reported that the morning after a group of Japanese visitors lead by Masao Maki meditated on a shape that they would find recognizable, an origami-type pattern appeared in the field.
