Just on a tangent, as I mentioned earlier, the Mrs and I took in two films on Friday night: "Snow White and the Huntsman", and "Prometheus". Both had Charlize Theron.
Beautiful woman, mkay? Stunning (in spite of the fact that her nostrils are asymmetrical). But her presence in both these films, at least IMHO, was throwaway. They could have plugged any movie star caliber actress into her roles - especially as the villain on SWATH. She just came across as uninteresting, flat, forced, and her supposed star power did not shine.
I compared that to her explosive performance in "Monster", where she gained a bunch of weight and played the hideously ugly serial truck-stop killer Aileen Wournos. I thought that was a notably fine acting performances, and that is the standard of her ability I had in my mind as I saw these two latest films in which she disappointed me.
So I looked up her filmography to see what else she's been in. Nothing spectacular. Of the ones I've seen, she was pretty good in "Devil's Advocate", but then, who doesn't look like the world's greatest across from Keanu Reeves. She was awfully cute in "Mighty Joe Young", but that wasn't a demanding role.
I think "Monster" was her high-bar - a fluke. I think her presence in any film is more due to her name and her pretty face than her ability to add acting dimension.