Here's a good video interview by Lucy Marcus on the board's crucial role in constantly innovating and adjusting the business model:
http://www.youtube.com/watch?v=KulPMCSsBaU&list=PL9E6CECAAF316683E
The Board Director Training Institute (BDTI) is a "public interest" nonprofit in Japan dedicated to training about directorship, corporate governance, and related management techniques. It is certified by the Japanese government to conduct these activities as a regulated nonprofit. Read a summary about BDTI here, and see a menu of its services for both corporations and investors here.