In part one of the interview (10:01), Moggridge talks about the process he went through to design/write the book (yes, there was a prototype involved!) as well as some thoughts on what factors are common where good interaction design is created.
In the second part (05:48), Moggridge talks about designing games and what interactions can learn from games design.
Part three (10:28) finally, deals with the ingredients of successful design teams – who is in them, how do they work together, where do they work, etc.
(via Usability in the News)