Homepage: http://www.ocf.berkeley.edu/~stoll/
Clifford Stoll is a washed up BerkeleyHacker?. He wrote
One of Cliff's sidelines is selling various KleinBottle and MoebiusStrip inspired merchandise, such as the Klein bottle knitted cap he is wearing in the photo. His web site devoted to this is pretty funny for the topologically inclined. http://www.kleinbottle.com/
I went to a Clifford Stoll book signing (Dayton, Ohio) many years ago. He is, by far, the most hyperactive person I have ever met, including kids. He bounced around the entire time he was talking, and couldn't sit still for a minute. He was extremely bright, articulate, and very friendly to everyone at the book signing.
I disagreed with a lot of SiliconSnakeOil, though. It seemed more like he just wanted to stir controversy.