A concise introduction presented by the Department of Physics in Northeastern University is as follows.
The Connected documentary investigates the various mind-blowing applications of network theory in our everyday lives. In the film, Barabási and other scientists suggest that computer viruses, infectious diseases, proteins in the cell, and human social groups are all governed by the same fundamental concepts. By applying of these fundamental concepts to the military, to technology, and modern medicine, "network theory" scientists develop strong guides in research that may help us to control AIDS, break-up terrorist networks, and yes, perhaps even cure cancer.
You may find it at: