http://www.amazon.com/Naked-Crowd-Reclaiming-Security-Freedo...
While I have not read the book you linked, I think the dick pic premise captures the extent of the NSA's programs quite well and frames the issue in a down-to-earth way. It lets people see the domestic side of the issue, which is the difference between "Edward Snowden is a traitor who has compromised our national security" to "holy shit, the NSA is invading my privacy wtf..."
"The Ivy League nude posture photos were taken in the 1940s through the 1970s of all incoming freshmen at certain Ivy League and Seven Sisters colleges (as well as Swarthmore), ostensibly to gauge the rate and severity of rickets, scoliosis, and lordosis in the population.[1][2] Harvard previously had its own such program by the 1880s.[2] The larger project was run by William Herbert Sheldon and Earnest Albert Hooton, who may have been using the data to support their theory on body types and social hierarchy. What remained of the images were transferred to the Smithsonian and most were destroyed between 1995 and 2001.[1][3]"