From Cyborg Anthropology
Michel Callon is a Professor of Sociology at the Ecole des Mines de Paris and member of the Centre de Sociologie de l'Innovation. He is an influential author in the field of Science and Technology Studies and one of the leading proponents of Actor-network theory (ANT) with Bruno Latour. http://en.wikipedia.org/wiki/Michel_Callon
One of the founders of Actor network theory, and wrote a classic article on cease gallops and actanct networks.