I called in to see a friend, a professional stage magician, n around 1970-71, and he introduced me to his house guest, a little, bearded man who explained that he was in the UK to publicise his book, an exposé called The Magic if Uri Geller. his name was James Randi, known professionally as The Amazing Randi.
Today, in his eighties Randi is still involved with his James Randi Educational Foundation, which still offers $1,000,000 to anybody who can demonstrate any kind of supernatural 'power' or ability, under test conditions.
He has spent much of his life exposing those who cheat the public, people like the 'faith healer' Peter Popoff for example, using his knowledge of the tricks and methods of the magician to ferret out their cheating.
James Randi is Quite Interesting... www.randi.org/