I tend to agree with Lady Acid Fairy. It was a tragic event, but the more we drag on about it, the more we let the "enemy" see that they can get to us. If we could just move on (not saying forget, but move on. It's been 8 years now), we could show them that we're a strong country, and their actions can't shake us.
But since you asked: I was in 8th grade, I was getting ready for school and I was listening to the radio. A week or so before, the radio show I listen to had played this elaborate prank about the Sacramento Kings (basketball team) moving to LA. (Turns out it was actually a family from Sacramento named the Kings) So they kept repeating how it was not a joke, kind of a boy who cried wolf moment at that point. But when I started to hear what they were talking about, I went to my mom and asked if I could put on the news (we weren't allowed to have the TV on in the mornings before school, too distracting). We did, and we watched as the second plane hit. It's definitely a day that I will never forget, but it's one that I hope someday we can all put behind us.