Who are the Optimists of New Zealand?

Every community has them - the dreamers, the idealists, the one's who tend towards the bright side of life. These people find stuff to get excited about. They inspire change via inspiration. They make stuff happen, because they've got so much energy and passion that it seems impossible for them not to make progress. Who are our optimists? Two people who come to mind are: Mike Ward - the devoted Speights Coast to Coast competitor, Jeweler, ex-Green Party MP, ex-Nelson City Councilor; and Kevin Roberts - CEO of Saatchi and Saatchi - I subscribe to his fantastic blogs because he just keeps finding stuff to get excited about, and I find his enthusiasm and outlook on life infectious. Who else??? Let me know if you have any ideas ...