I've never heard any reference to Swedenborg on the show. I have a fat volume of his visions of Heaven and Hell which I have, uh, paged through. He seems to report the kind of things you'd expect from an enlightenment intellectual - not particularly impressive. But his story is remarkable. He was a mining engineer in 18th century Sweden who began having visions in middle age. His clairvoyance was looked into by Kant of all people, who thought it genuine. He influenced William Blake, and Helen Keller later was a member of the Swedenborgian church.