I like Neal DeGrasse Tyson's PBS series best, though. He has a lot more personality than Cox and even, dare I say it, Sagan.
I can't stand Tyson, but that is my own opinion. He seems a bit too smarmy.
But that doesn't really matter. It sounds like this cable network is looking for a fresh face which is a really good idea. I would hope that they find a woman with an engaging personality and the education to back it up. The lack of women in the scientific fields has been shameful over the last 30 years. Science would be much better off if more women were attracted to the profession.