It never fails to disturb me when I see footage of 9/11. I think it has to be the worst tragedy there has been in my lifetime. Thanks for that clip.
I trawl through youtube for hours sometimes, and there's some really good stuff on there.
Here's one which might not be your cup of tea, but I thought it was really good:
http://www.youtube.com/watch?v=SVMiHC2Bj6k
Edit to add: Should this be in another thread, or is it still within the category?