The Story of John Titor: "A person going by the name of John Titor and claiming to be a soldier on a mission from 2036 presented a considerable amount of information on the Web beginning around November 2000 about his mission and time travel machine, his perspective on our society, how our society is going wrong, and how society as we know it will end in a very short but massive intercontinental nuclear war in 2015. He's gone now, back to 2036 he said he was going in his last posting on March 24, 2001, and the threads he left across the Web are slowly evaporating. "

Well this is just... odd. And I sort of wish I'd heard about it before now, because it might have been fun to watch unfold.