this TED talk by Eric Berlow and Sean Gourley in which they analyze and visualize TED talks (that's very meta, isn't it)? I am posting a comment here because I like how they animated the data, particularly the transitions between network visualizations and bubble plots and maps.
Not surprisingly, being a TED talk, it is a bit too short and vague. It'd be great to learn more about the algorithms that they applied to analyze the content of the talks and their “mathematical structure.” I am curious.
(h/t Fernando Fiestas)