There are no rules about creativity. Which made constructing our list of the 100 Most Creative People in Business a tricky task. We looked for dazzling new thinkers, rising stars, and boldface names who couldn't be ignored. We avoided people we've profiled in the recent past. We emphasized those whose creativity addresses a larger issue -- from the future of our energy infrastructure to the evolution of philanthropy to next-generation media. So read on. Enjoy. Quibble. Complain.