Nova or one of the occasional science shows had a good show a couple of years ago on the original crop circle guys. They included a classic sting scene where they all snuck out to a complicit farmer's field, made the crop circle in a couple of hours with their crude but effective board, string and hat-sight apparatus, and called the regional (national? international?) "expert" on crop circles, who promptly gave much "proof" that it simply could not have been done by any existing technology. When the cameraman showed him the film of it being made, he huffed and puffed and made a lot of the usual fallacial arguments -- it doesn't prove that extraterrestrials haven't made any other ones, etc.
(rolling of eyes) And it certainly couldn't be a coincidence that it's breaking exactly one weekend before the movie premieres, no, no...
Don't believe everything you see on TV..