Why not Ōta Hiroko for Bank of Japan Governor?
She is an academic with tons of government experience, is considered an independent thinker in favor of economic reform, knows her macro and her micro and if not famous, is at least a recognized figure in overseas economic circles.
How about it, Prime Minister Fukuda? How about shattering the glass ceiling in order to shock your moribund administration back into life?
Click here for her cv in English, complete with unflattering photo image.