A feature article about modern applications of speech recognition, in particular how they've combined with complementary technologies to produce such consumer products as Siri.
A news report on the Privacy Identity Innovation conference in Menlo Park, November 2011, which focused largely on how social media are changing the landscape for consumers.
Reporting on a three-day conference about technology policy. This was my biggest case of preparation overkill: 12,000 words of notes went into a 575-word article.