Keith Ferrazzi uses a term in his book, Never Eat Alone, called the 'Super Connector'. His definition (paraphrased from his book & site):"Super Connectors are people who maintain contact with thousands of people in many different worlds and know them well enough to give them a call. Restauranteurs, headhunters, lobbyists, fundraisers, public relations people, politicians, and journalists are the best super-connectors because it's their job to know EVERYONE."