Speaking to a non-tech audience I explained which are the motivations for the Open Data movement, which are the main problems to implement it in the public institutions in Spain, and which are the main principles that we should observe to build a great Open Data environment in the administration.
You can see the video recording of this talk at http://vimeo.com/aitorgarcia/open-data-alboan (spanish audio, sorry).
'Open Data: What, Why & How' was given on Nov 17, 2011 during a 2 day conference called 'Toma los datos' (http://www.tomalosdatos.alboan.org) organized by Alboan, an basque NGO focused on creating sustainable and equal conditions for all people.
You can see the other talk I gave in the same conference about the Icelandic Constitutional reform here: http://speakerdeck.com/u/_aitor/p/reboot-iceland