There are a couple of moments in the extended Director's cut of Hancock where Charlize pulls off the best superwoman portrayal I've ever seen. Anywhere.
The big fight scene (the one where she hits him with a semi-truck) is extended in that version of the movie, and it's incredibly good.
She knows how to be fierce and crazy while enthusiastically loving having extreme power. The special effects are only so-so, but it's the fierce power of her performance (and, OK, the way she looks and her outfit) that knocked it out of the park.
Worth a look if you can get that version of the movie.