Having just gotten back from 34C3 I'm going to post a few of my favorites from there:
Dude, you broke the Future! https://media.ccc.de/v/34c3-9270-dude_you_broke_the_future
Pointing Fingers at 'The Media' https://media.ccc.de/v/34c3-9106-pointing_fingers_at_the_med...
Social Cooling - big data’s unintended side effect https://media.ccc.de/v/34c3-8797-social_cooling_-_big_data_s...
Full list here: https://media.ccc.de/c/34c3