pop-philosophy [aka the light version] with a political edge: http://www.justiceharvard.org/. playlist on yt.
i’ve converted all of the lectures to mp3 [using this] so now i have something to listen to during the evening walks.
as a counterbalance to the ‘soft’ stuff – 28c3 recordings: http://events.ccc.de/congress/2011/wiki/Documentation, and a list of talks; most interesting [for me] talks: