I've read several blog posts today about they weren't going to blog about 9/11 because they feel like its all been said before.
It probably has. But that doesn't mean it isn't appropriate to say it again. My children are young enough (even the 17 yr old) that they don't really remember, and one wasn't even born when it happened. My 9th grader's Social Studies teacher told the class he was in 7th grade at the time. The generation that is teenagers now has only the vaguest memories, if that, of 9/11, and we need to tell them.
Tell them where you were when you first heard. Tell them how you felt. Tell them how the country reacted. Tell them everything, and if they're old enough, watch the videos. Because this horrible, extraordinary event bound our country together in a way that still makes my eyes well with tears. If we forget the sacrifices, knowing and unwitting, that were made that day, we do a disservice to those that were lost. We are a country that has survived revolution, civil war, world wars, assassinations, and horrific terrorist attack. Like it or not, it is part of our national fabric now, and is part of what makes us Americans.
So say the same things again, about a beautiful day in September that became unforgettable in the worst way, and how you experienced it. "Those who forget history are doomed to repeat it." Let's not forget.