Book excerpt: A guide to creating "ever-cool" entertainment. An asset to entertainment executives or anyone aiming to create the next big hit, this book offers guidelines for developing concepts and marketing blockbusters. Whether it is a best-selling novel, a video game, or a high-tech toy, blockbusters play a big part in American society. Despite the prominence of these breakthrough hits, most entertainment ventures do not survive in today's competitive market. This guide identifies the key principles that will ensure lasting success.