Scarlett Johansson as Black Widow in 'Iron Man 2'Already, there's talk of giving the sexy comic book arachnid played by 25-year-old Johansson her own movie. She will, co-star Samuel L. Jackson predicts, cause tongues to be hanging out in theaters across the land. No wonder Robert Downey, Jr.'s Tony Stark announces at first sight, "I want one."
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