A Clint Mansell soundtrack for a Darren Aronofsky film? Hell. Yes.
Mansell also did the soundtracks for Moon (my favorite of his, I think) and Requiem for a Dream. The Noah soundtrack is available for purchase on iTunes and Amazon.
The Art of the Title Sequence blog highlights the opening titles for Moon. Love, love, love that song...the whole soundtrack (by Clint "Requiem for a Dream" Mansell) is good actually.