Brilliant - nice post.
From the same site -
Fast-Moving Ball Critter;
http://www.colinandrews.net/CropCircles-VideoPage.html
I saw one of these balls once, in a car park in Abingdon, UK, in about 1982.
I seem to remember that in the last lot of documents released by our esteemed Govt. there was a reference to this event.
It was pretty amazing I must say, and my whole family saw it from the car we were in. It crackled and zipped about.