A website (eon8.com) which was a mysterious site with a count-down timer on it, along with other unusuall codes and links. This website spawned many theories for its actuall purpose. Such as, that it was a global computer virus, linked to terrorism, or even a countdown to the end of the world. In the end, when the counter struck zero the website refreshed and revealed that eon8 was merely a (sucessful) social experiment conducted by a 23 year old computer programmer named Mike, who lives in Florida (according to his final message).
Geez, I thought eon8.com was a countdown to destruction but really it was just a joke...