Prof Philip Joseph’s lecture in Radio New Zealand’s Waitangi debate 2009 series seems not yet to be available on the web.
I’ve gone along to Te Papa occasionally to these lectures, usually to disappointment. This one far exceeded expectation. It crisply demolishes the woolly apologies for retention of the Maori seats. It is beautifully delivered – a model of what the series could be.
RSS feeds available for 
It is there, it’s the second 2009 one. They’ve just (at present) copy and pasted the synopsis for the second 2008 lecture.
It was remarked on the night (and I suspect in the broadcast) that it was nice that someone finally brought the debate back into the Treaty Debates.