I was sitting in the waiting room of a dentist when I first heard about a small airplane crashin into a skyscraper in NY. I didn´t think much about it and just thought: "What a stupid pilot...." When I came back to my parents home they where both walkin up and down in the living room with TV running.... zapping through all TV channels where you could see the burning WTC.... It was a goose-bump moment I will never forget and there where only few events after that which had such an impact on world-news and media.
Have a good evening and let´s hope that we won´t see such pictures again.