Networks and Counter-Terrorism
Apparantly the CIA and other governmental agencies tasked with counter-terrorism programs have tapped into network theory and analysis as a method to deter and detect terrorist activity. Although it is a relatively brief treatment of network theory (some of which seems fairly obvious), the article points to both the popularity of network theory in across disciplines as well as the explicit uses of the perspective. This may be interesting to talk about or for papers that investigate some of Castells' work.
Take a look at the article in the most recent New York Times Magazine:
(this url may need to be cut and pasted)