From Russia with rat poison
The disturbing story of the poisoning in London of KGB defector Alexander Litvinenko has been all over the news recently, and so much has been said about it that there's hardly much left to say - except pray that the outcome won't be lethal. Still, this is my favourite headline so far (via Sonitus) - I quite like its bitter irony, if such a thing can be said without being insensitive.
Update: in retrospect, "From Russia with Polonium Radiation" would have been a more accurate title. The story is a great illustration of the danger of jumping to conclusions too quickly with any breaking news story.