9/11: Life Under Attack

Whilst not a technically groundbreaking documentary, the importance and power of the mostly new images of what regular people shot with their cameras on 9/11 is the closest you'll get to having been in New York on that day and shows the side that this kind of events tend to not show: the one of the regular people trapped in them. The only thing that it can't really transmit is the fear of not knowing what was going to happen next (that the ones that we saw it live, even in the TV news, will never forget), because everybody now knows how events unfolded. A must see.