This movie was a fantastic addition to the trilogy. At first, I thought that the movie was too much about the CIA, and that kinda turned me away, but then it gained momentum and started in on Bourne at his best: kicking butt and taking names.
But there is a DEFINATE flaw in this movie, as expressed by Vix, is that the shaky camera. I've see worse, in Spiderman 3, but it was still TERRIBLE! Many of the fight scenes were actually dulled down because of it! For example, when he's fighting that one dude in Madrid. They are throwing some KILLER moves, and the dude totally does a side twist, but I could barely even tell because of the camera. I had to deduct it in logic, actually. "Ah, he was trapped, and there was a whirring sound, thus he must have done some type of flip." Another prime example would be in the car chase, and they attempt to film the rear view mirror. I couldn't make out what was behind him to save my life. It couldn't been anything from a cow to Agent Smith for all I know. Terrible. It was also extremely evident when it changed from shaky back to still. Like after the car chase and Bourne walks over to the "asset" sitting in the car. One minute it's shaky so hard, you are about to vomit, the next, it's completely still. Gahg.
Overall, it was still a tremendous movie. AMAZING plot, acting, action scenes (other than camera), and everything. If you are thinking of buying this movie, I would, especially with the other two.