A good discussion in BW of the role of networks in getting work done in organizations:The Office Chart That Really Counts
Many point to University of Virginia management professor Rob Cross as a key player in making social network analysis, which has its roots in sociology, more applicable to practical business needs. Cross has formed a roundtable that boasts 53 members after just 18 months. It counts biggies such as Procter & Gamble, Merck, and Lehman Brothers as participants.
There are some who network, some who who study them, and some who teach them. Rare is the individual who can do all three.