Permaculture UK has the first part of an interview I did with Richard Register, founder of the Ecocity Builders, last December.
Ecocities: using creativity to express our future urban needs
This one is about the important role creative expression has in designing them.

Update, 5/20/13: Part II just went up…

The Ecocity: The only way to organise massive populations?
Richard Register invites permaculturists to scale up their ideas on a bigger level to cater for our increasingly large world population.