I know that this documentary hasn't aired in the US, in fact I know that only the Discovery Channel expressed interest in airing the program.
I had the chance to see an advanced screening today, and I gotta say that it was by far more impactful and emotional than any other movie or documentary I have seen on 9/11... honestly to me it put World Trade Center to shame, simply because this documentary explored the image of one of the jumpers, and because this image brought home the horror of the day more than any other that I know.
I'd encourage people to "search" for this out there on the internet, or to at least look into it. However I do know that there are many that may find the imagery too disturbing, and others that may not be emotionally prepared for it.
Anyways here is the link to the CBC website dealing with the program:
http://www.cbc.ca/passionateeyemonday/fallingman/