A how-to-swear video would be entertaining, but I suspect it would not meet their criteria.
I'd be fascinated by one that did, though. At least, it seems plausible that there's interesting cognitive structure underlying the common linguistic and emotional aspects of swearing (the culture-bound specifics, less so).
Ars Technica are holding a competition for people to make a science video up to 3 minutes long "to explain a scientific concept in terms that a high school science class would not only understand, but actually be interested in watching". Prizes in three categories: biology, physics, and mathematics. Deadline is December 25. More details here.
Anyone want to have a go at Bayes' theorem? Cognitive bias? Defeating death? Invisible purple dragons?