she kicked ass in "King Arthur" - without her, that movie would not have had any pulse at all.
she did well in (a dead dog of) a movie called "Domino"
I think she does have potential to become a great actress - a respectable feat in what is admittedly a trivial profession.
as to "sexiest woman"?
she's still too much a girl to meet the requirements. give her another ten years and we'll see.
If you loved her in King Arthur see her in Domino.