Total compensation (2008-2010): $4,092,664
Fortune 500 Board Directorships: FedEx, Medtronic, Marathon Oil Company, NYSE Euronext, Public Service Enterprise Group, IBM
Jackson, a renowned theoretical physicist and former chairman of the U.S. Nuclear Regulatory Commission, keeps watch over six boards—more than any other director who ranked on this list. As the president of Rensselaer Polytechnic Institute, she earns
$1 million-plus at her day job. And that’s dwarfed by her side gigs.