I finally got to sit down and watch this today. Taken from the official website, here is a basic overview of the film:
A two part special series that tells the epic story of how the Iraq war began and how it has been fought, both on the ground and deep inside the government.
I really enjoyed this show. It offered a very good look at how the war became twisted and strayed from its original goal and how the key players in Washington allowed all of it to happen. If you have some free time - and I mean a lot of it. This is not a short walk in the park - I suggest you watch it. Matter of fact, even if you don't have the free time, make it. The whole series is online here, divided into segments.