Except for those of us who like freckled irish girls. I don't really even like girls who tan a lot, I just like healthy looking skin. Not that there aren't some very attractive dark skinned women out there.
As for my answer. I wouldn't kick Halle Berry out of bed for eating crackers (even if crackers was the family dog), but IMO Angelina Jolie is about the sexiest woman in hollywood. Plus she is about ten years younger than Halle so she'll have the longevity.
When it come to pure sexiness, I'd have to say Halle by far. I'm sure Angelina would be better girlfriend material as she just seems cool as hell whereas Halle is a fucking nut