If you have an interest in the crop circles that have been appearing around the world for the last 30 years, you're not alone. The topic of crop circles has gained more and more popularity over the years, and the recent M. Night Shyamalan movie, Signs, is the focal point of this mystery, which, much like in real life, tells the story of the mysterious appearance of odd patterns made in crop fields. Fueling debate that has endured the last few decades, many skeptics have discussed whether or not these designs are the creation of humans, supernatural forces, or aliens. …