Who's getting sick of Iron Man 2 updates? Not us! Amid the recent rumors swirling through the trades about baddie casting (and, well, casting in general) for the superhero sequel, comes talk of actress Emily Blunt in negotiations for the part of the femme fatale Black Widow. Blunt, who may be best known for her part as lead assistant-to-Miranda-Priestly Emily in The Devil Wears Prada, would play the Black Widow, also known as Natasha Romanoff, a Soviet superspy beauty who dresses in a skintight black costume that's enhanced, much like Iron Man's costume, with high-tech weaponry. Yowza!