Jamie Oliver has motivated over 600,000 Americans to join his Food Revolution. The impassioned chef is determined to take on the high statistics of obesity, heart disease and diabetes in the US by changing the way America eats. We like the campaign because he has so many great elements: a clear call to action, a simple pledge/sign up, a food philosophy, a TV show, website, book, recipes and a great campaign design. Definitely worth a look and even better, join the revolution.