A long-time agency leader, former political consultant, and corporate ear-whisperer, Harris Diamond expertly straddles the line between business and PR. Being the CEO of arguably the business' biggest PR firm isn't easy. But as the Interpublic Group has been weathering turbulence in the past few years, its CMG division, headed by Diamond, has been a constant bright spot. Weber Shandwick, along with fellow IPG firms GolinHarris, DeVries, and MWW Group, provides a steady positive counterpoint to the ups and downs of the holding company's more unstable properties. WS remains a PR juggernaut, and Diamond's talents will surely be in ever greater demand at higher levels in the holding-company structure. Sarbanes-Oxley prevents him from touting WS as "the world's largest PR firm," but its leadership is assumed. Diamond's drive has been at the forefront of establishing it.