Over the years I have had the honor of speaking to many business founders but few have built their business around something they are truly passionate about. Dave Blum did it. He built a business based on his passion for travel and games. This was a fascinating interview.

His business is Dr. Clue. 

http://drclue.com Helping companies improve their teamwork--one puzzle at a time! Freedom from office tension & dysfunction. Freedom from the mundane. They produce engaging, interactive teambuilding events for brainy people who thrive on intellectual challenge. By taking part in a Dr. Clue treasure hunt, you'll stretch your minds and bodies, develop relationships, and practice your strategy, delegation, and team decision-making skills. And you'll have a ton of fun in the process!!