<p>Sir Martin Sorrell is arguably the most important advertising executive in the world.
As CEO of WPP Group, he oversees a global marketing machine that he's assembled over more than 30 years. His group companies include J Walter Thompson and Ogilvy & Mather, Young & Rubicam, and more than 100 others. Clients include two of every three Fortune Global 500 companies.
When I sat down with him for the Fortt Knox podcast, I wanted to talk about his childhood, his career, and the pivotal choices he made. He didn't disappoint.</p>

20 - Katie Jacobs Stanton, Color CMO: Be the Exception to the Rule

Jon Fortt co-anchors TechCheck on CNBC, and has covered technology and innovation for more than 15 years. Fortt Knox brings you rich ideas and powerful people. Guests include Intel CEO Brian Krzanich, Accenture CEO of North America Julie Sweet, Olympic champion Michael Phelps, and Broadway veteran Rory O'Malley (Hamilton, The Book of Mormon). Join Jon's conversations with power brokers on how they made it, what they value, and what makes them tick.