FILE - In this Oct. 22, 2013 file photo, Selena Gomez performs in concert at the Giant Center in Hershey, Penn. A homeless man has been ordered to undergo psychological treatment after pleading no contest to stalking Gomez. Los Angeles County prosecutors say Che Thomas Cruz entered the plea Friday, June 20, 2014, and was told to spend six months in a residential treatment facility followed by a year of psychological treatment. (Photo by Owen Sweeney/Invision/AP, file)

Laura Poitras' new documentary, "Citzenfour," is the kind of stirring thriller that David Fincher or Paul Greengrass could have turned into a feature film. Part of that feeling comes from the way Poitras films Edward Snowden's interviews with Glenn Greenwald, clandestine meetings that bubble with creeping paranoia and mounting tension; part of it comes from the music, which sounds like the most Trent Reznor-y score this side of "The Social Network." As it turns out, there's a reason for that second one: the two most prominent songs in "Citzenfour" are by Reznor's Nine Inch Nails.

Both tracks come from "Ghosts I-IV," the 2008 album that was released long before Reznor won an Oscar for "The Social Network." The first, "02 Ghosts I," sets an eerie stage for "Citizenfour"; the second, "20 Ghosts IV," provides more of a hyperactive chase motif.

But if Reznor's brand of industrial instrumental work doesn't interest you, there's this: "Citizenfour" also includes a brief snippet of Selena Gomez's "Come and Get It" video, which is on in the background during a sequence where Snowden is packing his bags. A better distillation of what life was like in the spring 2013 might not be found on screen this year.