The University of East Anglia's Hadley Climatic Research Centre appears to have suffered a security breach earlier today, when an unknown hacker apparently downloaded 1079 e-mails and 72 documents of various types and published them to an anonymous FTP server. These files appear to contain highly sensitive information that, if genuine, could prove extremely embarrassing to the authors of the e-mails involved. Those authors include some of the most celebrated names among proponents of the theory of anthropogenic global warming (AGW).
(The original FTP link is down. The ZIP archive is now on BitTorrent.)
If this turns out to be legit, it'll be the equivalent of the Pentagon Papers for the Anthropogenic Climate Change swindle.
Edit: The leaked materials appear to be genuine. More coverage here, here, and here.
Edit 2: Fox has picked up on it.