Yesterday I was talking with my cousin that at the time was living in New York. To this day she still remembers and hears the sirens from the firefighters, that was what woke her up.
I was staring at the TV, watching the news of first hit when saw the second plane got into the other tower. Called a friend and we spent the rest of the day following the news on TV. The footage of that day from CNN is on YouTube (part I and part II) - something should be properly archived for future generations.