oh yes that's right I see that as well, I notice it less because of the more benign topic. I just clicked on a few links from the home page and it seems to depend on the section the article is on (science, tech, gaming etc.), in the "tech" and "gadgets" sections I get the military plane video, when the article is categorised as "gaming" or "information technology" I get the Quantum Leap video, and when I'm reading articles in the "science" category I get a third video about Biomarkers in medical diagnosis.
