More on the opportunities and interaction challenges of AJAX via Jeffrey Veen.
Jeffrey points to the work of Bill Scott of Sabre Airline Solutions who have put some code and demos online at OpenRico.org.
By the way, if anyone is doing this kind of work in NZ, get in touch. I’d be keen to get involved from a usability and interface design perspective (as in: I’d be happy to offer my services for *cough* free in return for a good case study).