Top 10 presentaties aller tijden
Hans Roling talks about the “devolving world” at the 2006 TED Conference
http://ted.com/tedtalks/tedtalksplayer.cfm?key=hans_rosling&flashEnabled=1
John F. Kennedy at the Berlin Wall in 1963
http://www.youtube.com/watch?v=hH6nQhss4Yc