The CITRIS Research Exchange and i4energy seminar series are both available for viewing on YouTube:
Spring 2011 Research Exchange playlist: http://www.youtube.com/user/citrisuc#grid/user/B362BF876B7C97A7
Spring 2011 i4energy playlist: http://www.youtube.com/user/citrisuc#grid/user/FCACE0B15AFE9874