I just learned about the website www.videolectures.net. It contains a collection recorded lectures of various people. In particular you can find there a fairly introductory, but nevertheless interesting, lecture by Mark Newman in which he talks about his research on assortative mixing in social networks. There is also Donald Rubin’s lecture on causality and propensity score matching. Additionally there are couple of interesting titles on cooperation, e.g. Adam Kun “Evolution of Cooperation on Dynamical Graphs” and others.
Last but not least, there is for example Umberto Eco on his recent book “History of Ugliness” and more.