Boy, did I see a doozy of a documentary last night on HBO on Demand. It's called "Telling Nicholas" and takes place a few days after the events of 9/11. It deals primarily with a 7-year old boy whose mother apparently passed in one of the towers on that day.
The father and the rest of the family struggle with how and when to tell Nicholas that his mother has passed on. Documentaries are one of my favorite genres of movies due to the fact that they are taken from real life (movies don't need to have explosions and sex to be compelling).