I just finished watching this film. I'm giving it an "A". Also, this film may be propaganda to the Far-Right Americans, but it depic the "behind-the-scenes" politics very well. It does definitely lean to the left, but those shady deals, assassinations, framing, scandals, they really do happen. It's not just the U.S. either. Don't be naive. All the major governments operate this way, and this is how it's been done forever. It goes on from the agencies that we don't even know they exist, to CIA, to corporate levels. Enough about politics and conspiracies though.
My MVP of "Syriana" is Amanda Peet. We all knew that she is really cute and really funny. As Matt Damon character's wife in this movie, she moved up few notches. Now, she's pretty much one of the best actresses in my book. George Clooney was fat. He gained a few for this role, he was pretty good. His character wasn't too bright(for an veteran CIA operative), so that bothered me a little bit. Jefferey Wright, who I must admit, never noticed him before. He was excellent. It shouldn't be, but another huge surprise was Christopher Plummer. I didnt' even know he was still around.

When he goes, he will be sorely missed, because he still is one of the finest actors around. Unfortunately, I don't know any names of the actors who played the characters on the Arab side, but they were really excellent as well. Some were even better, simply magnificent.
This movie is around 2 hours long, but it's one of those movies that wasn't long enough. It is out on DVD for rent or buy, I strongly recommend this film. 👍👍