Stuxnet, a computer worm that targets industrial control systems, seems to be a friend of the entire world except Iran. It seems that it is widespread in Iran and attacking its nuclear facilities. It is also on the loose in the USA and several other countries looking for Siemens control systems, but has not harmed any of our systems. Here is a pdf about mitigation and removal of the Stuxnet worm from DHS CERT (Computer Emergency Response Team).
All I can say is "Go Stuxnet, Go!"