NDRNorddeutscher Rundfunk (North German Broadcasting), a German public television service, produced the 44-minute documentary film "Im Visier der Hacker - Wie gefährlich wird das Netz?"  The film, whose title translates to "Targeted by the hackers: how dangerous is the power?," features interviews with Dr. Humphreys and Daniel Shepard on GPS spoofing.  The film is in German, but the producers are preparing English subtitles.  

Watch the film at NDR's website.