Scott Cotherman has a thing for companies. He flat out loves them. Most of all, he loves making them into something bigger and better. He worked his magic on Chicago's Corbett Agency in the late '90s when, as COO, he transformed it from a regional agency into a global medical-communications company serving mega-brands. And in 2004, he was the brains behind the merging of the Corbett and Accel agencies that transformed them into the Corbett Accel Healthcare Group (a member of the Omnicom Group, the world's largest advertising holding company). Under his leadership, as CEO, the combined entity has since doubled in size. It now includes Accel Health, Corbett, Surge, Iris, and Kinect. Cotherman, who combines Midwestern warmth with CEO sophistication, describes himself as being passionate about organizations, transformational change, leadership development, and the future. AGENCY CONFIDENTIAL met with him recently over a lunch of chicken sandwiches, potato chips, and Diet Cokes. An engaging story-teller, he has..