"Designing Media" by Bill Moggridge

Moggridge is a renowned interaction designer and the director of the Smithsonian's Cooper-Hewitt, National Design Museum. His new book "examines connections and conflicts between old and new media, describing how the [mainstream media] have changed and how new patterns of media consumption are emerging." It's composed of Moggridge's interviews with almost forty prominent people shaping media today.

You can buy the book Amazon. Over at the marketing site, there's a wealth of interview segments available.