EyeWonder has named DAVID BRECKLING, the company’s president and co-founder, as chief executive officer. Breckling succeeds former CEO and fellow co-founder JOHN VINCENT. Vincent will serve as CEO of the newly-formed Voyant Media Group, a media planning and buying company. He will continue to act as a member of EyeWonder’s board of directors.

Bigfoot Interactive has named JORDAN COHEN to the newly created position of director of ISP and government relations. Cohen will focus on deliverability optimization initiatives for Bigfoot Interactive’s client base. He joins Bigfoot Interactive from the Direct Marketing Association where he managed public policy and served as a spokesperson on a variety of direct and interactive marketing issues.

Nielsen Media Research has promoted three executives. SARA ERICHSON has been promoted to general manager in charge of all of Nielsen’s national television audience measurement services. Erichson has been senior vice president, sales and marketing, national services, since February 2003. Erichson succeeds DAVE THOMAS, newly appointed senior vice president, strategy and business development; and SCOTT SPRINGER, newly appointed general manager of operations.

Young & Rubicam Brands have named MICHAEL PRIEVE as executive creative director at the Southern California office. He joins Young & Rubicam Brands from FCB San Francisco, where he held the same job title. Prieve will direct creative teams across the agency’s roster of clients, including Land Rover, Sony Electronics, Mattel, Jaguar, and Callaway Golf.