I don't watch Doctor Who, I just know the basic premise and have Whovians as friends.
Not sure why there hasn't been a female doctor yet. And they're all white guys too, aren't they? Yeeesh.
I don't really have names to offer, but I love Helen Mirren to death. I wish she was my mom. (Uh, sorry mom -- but we're discussing Helen Mirren!) Not sure about her being the Doctor, but she's an asset to whatever she's in. it would be great to see her even in a supporting role.