http://www.linz.govt.nz/rcs/linz/pub/we ... /index.jsp
LINZ now has the newish NZTM Orthophoto product online and downloadable. So far most of Auckland is covered from Helensville in the north to the Bombays in the south. The large JPGs are pretty good (approx 6meg each)
The images of Auckland are very good and way better than the old NZMG versions.
I can see my house!
G