http://www.youtube.com/watch?v=Rb330-USIXk
http://www.youtube.com/watch?v=VJbsS3kwKKI
http://www.youtube.com/watch?v=PhpI83f24AI
http://www.youtube.com/watch?v=GfCWqT7YroA
http://collegerama.tudelft.nl/mediasite/SilverlightPlayer/Default.aspx?peid=35db8f210f224262b3dc5e939f4e7a651d
