While I don't like Don Brash (or the Act party), I have to admire the concept of announcing your availability to be the leader of an organisation that you don't currently belong to.
I would also like to take this opportunity to say that I am interested in being captain of the All Blacks during this year's world cup. I will be holding talks with the All Black management tomorrow, but if unsuccessful I will form my own rugby team and lead it to glorious victory on the field. I have backers and financial support - so there!