David Allen is an international best-selling author who is widely recognized as the world's leading expert on personal and organizational productivity. Time magazine called his flagship book, Getting Things Done, "the definitive business self-help book of the decade." Brandon Hall founded the Brandon Hall Group, a research and analyst firm, in 1995. He has worked as a consultant, researcher, writer, and speaker; is the author of Web-Based Training Cookbook; and has written for Forbes and US News and World Report. He has advised many organizations, including IBM, Apple, GE, Kraft, Cisco, Exxon, 3M, Microsoft, and the Department of Defense.