haha, that's a good question and I will answer it seriously

Honestly, I don't know. I know some would say Mother Teresa but that might be all propaganda for all I know, so I don't say who until I have read about them. There are bound to be 1 or 2 great scientists which were women, but offhand I couldn't tell you. That's a bit sad really, I can't actually name you a great female, but I will have a good think about it.
That's where I would look, at people who did great things for the human race and no... not Oprah Winfrey.

There are a few women who have suffered and died for a great cause, and they should be well up the list.