Scarlett Johansson as the Black Widow in IRON MAN 2?

Since we’re on the subject of IRON MAN 2, Scarlett Johansson will replace Emily Blunt as the Black Widow in Iron Man 2.
According to Nikki Finke, Emily Blunt had to drop out “because Fox exercised an option that the studio had from The Devil Wears Prada to make her do the upcoming film starring Jack Black, Gullivers Travels.”
I don’t know about you, but it feels like I see Scarlett Johansson in every single movie lately. Are there no other actresses around? It’s starting to be really hard getting into movies she stars in because I keep thinking “this is Scarlett Johansson playing so and so” instead of actually watching the character.
So right now I’m not sure how I feel about this casting news.
What do you guys think? Would Scarlett Johansson have been your pick for the Black Widow?