my take on crop circles..
First, the idea that all crop circles are hoaxes is like saying that all novels are masterpieces of literature. All crop circles can't be hoaxes. I can see how people might think this, but most people who hear about the electromagnetic anomalies in some crop circles and the "microwave" damage exhibited by some of the crops, tend to believe that there is something to these things.
Sure, there are some crop circles out there that are hoaxes. I would even hazard to say that most of them, these days, are hoaxes. Not all of them can be.
Now, as to what those non-hoaxed crop circles are and who made them? well, If I could answer that, I'd be on the "Today Show" tomorrow morning. I tend to go with the natural idea. I believe that is has something to do with the magnetic field of the earth or some other explaination of that nature. I just can't see why aliens would use crops as a medium for communication.