Commercial Breaks & Beats

Nevermind, I found it -- it's An Ending (Ascent) by Brian Eno

Hi all

What was the music in the trailers for the documentary which aired last night (6th september), 9/11: The Falling Man? It is a quiet choral piece, and I've heard it used on other things too (it's in 28 Days Later when they see the horses running in the fields)

Any ideas?