In the 11th and 12th century, a Christian sect known as the Cathars swept through France. Amongst other things, they believed that matter was intrinsically evil and that Jesus could not have been both incarnate in the (sinful) flesh and still be the son of God (they believed that he was a prophet and mortal who died on the cross).
The Catholic Church saw the Cathars as dangerously heretical and in 1209, Pope Innocent III launched the Albigensian Crusade to wipe out the Cathars (in which about 1 million people were killed).
Legend has it that four Cathar priests escaped with a sacred scroll, believed to have been written by Jesus himself, and hid pieces of the scroll around the world for safekeeping. They encoded the locations of these scrolls by weaving codes into cloths (Weaving was big for the Cathars - they even called themselves The Weavers).
And now, according to conspiracy theorists, the surviving Cathars/Weavers have initiated a sinister plan that will change the future of mankind....
Here's a short clip at History of the Cathars, which you'll probably find quite entertaining if you like The Da Vinci Code sort of thing: http://www.history-of-the-cathars.com/ [Flash video] - Thanks Sam Alexander!