Oh, excellent, you can see New Zealand on Google Maps now.
As soon as I zoom in much more than this, though, I get a bunch of broken images. So I guess they only have the outlines of the country, not the street maps (which are available for not too much cash from LINZ).
The satellite maps are better: here's central Christchurch. The big green blob on the left is Hagley Park (131 hectares) and the white and pink area is the CBD.