Momentum-NA can put some weight behind its marketing services. Doing business as Momentum Worldwide, the company offers sponsorship, promotion, retail, and event marketing services through more than 70 offices in nearly 50 countries. In addition, its PMK-BNC public relations branch promotes celebrities by arranging magazine covers, articles, and television appearances while its Momentum Music and Entertainment branch in New York organizes and promotes music events. Customers have included such heavy hitters as American Express, Intel, and Anheuser-Busch. Momentum Worldwide is a subsidiary of worldwide advertising network McCann Worldgroup, itself a division of media services conglomerate Interpublic Group.