[rab] Cool interview and work - well done, and well explained. New Zealand is nice and small, making it a lot easier to study than its behemoth of a neighbour, even though exactly the same process happened in Australia (albeit some half a century earlier) and it's been developing in interesting ways ever since. I'd be interested in the publications to date, if you've got a list somewhere. I have an interesting documentary about the australian accent, too, if you're interested.
[flerdle] So that Google doesn't link my uni page to this one, perhaps I should suggest you type my name into the venerable search engine, click the first link (at least, the first link in our part of the world), and towards the bottom of the page you can find a link to the relevant preprint. I heartily recommend the books by Gordon and Trudgill if you really want to get into the details of the empirical data, as opposed to our modelling.
[nights] He is one of the more notable names in dialect research, especially in the UK; it would be hard not to have heard of him at some stage if you've looked into this field much. [rab] Thanks very much.