The main character of this movie really is the architecture. It imposes itself into the story making the main actors little more than pawns to be moved between fantastically futuristic looking buildings.
The budget to shoot this movie in such locations as the Volkswagon HQ/"theme" park in Wolfsburg, Germany, to the Grand Bazaar in Istanbul, Turkey, via Berlin, New York City and Milan must have been blown on flights. I won't give anything away but the Guggenheim scene is unreal but watch the extras on how they did it is even more mindblowing.
Having said all that the acting is terrific from Clive Owen's world weary intensity to Naomi Watts' single mindedness and, unlike mail-it-in Hollywood movies, they don't end up in bed together which makes their working realtionship seem far more real.
The bad guys all seem like fairly normal family men which makes them all the more evil.
The movie sort of falls down a tad on the plot as you wonder how a large bank (it's loosely based on the real BCCI banking scandal) is brought down by just two people. Seems quite implausible no matter how good Watts and Owen are in portraying their roles.
The DVD is worth getting as the extras offer a tour of the architectural delights, the whole Guggenheim scene explained and a 30-min behind-the-scenes makin of as well as the usual commentary track.