Revealing mistake: When the Senator is being killed by Travolta in the river, we can see some shots of his assistant before his car explodes. If you watch closely just half a second before the frontal shot of the explosion, you can see in the driver's seat a dummy with a green face.
Continuity mistake: In the car chase scene Gabriel goes to get the gun from the boot leaving his door open then he starts to fire the gun with the boot open later the view switches and both are closed.
Continuity mistake: Where Hugh Jackman drops his daughter off at her mother's home the headrest behind her is down. After she leaves, the cop jumps into the passenger seat and the headrest is up. (00:40:25)
Other mistake: When Stanley is driving the Tuscan TVR while trying to escape the assassins, each close-up of the dashboard readout reveals that the speedometer is actually at 0. (01:01:00)
Continuity mistake: When we first see the interview room with Axel Torvalds in, a detective is standing behind him and his lawyer. He then goes to lean on the desk with one hand remaining on his hip. In the next shot he's put both hands on the table. (00:18:10)
Continuity mistake: During the scene in the nightclub where John Travolta first tells Hugh Jackman to hack entry in 60 seconds instead of 60 minutes, Vinne Jones is holding a gun to Hugh's head. As the shot switches back & forth during the scene, you see Vinnie is holding the gun two handed in 1 shot, & single handed in the other. This is repeated a few times as the shot changes.
Continuity mistake: When Stanley is hitting golf balls from the top of his trailer, we see a close-up of his left hand placing the ball on the tee. In the next shot, he's still leaning down, but now it's his right hand which has been placing the ball.
Revealing mistake: At the end of the car chase scene between the TVR and the SUVs, the last SUV crashes into a wall, explodes and flips over into a diner. During the explosion you can see a piston pushing the car over.
Answer: JT is exactly who he says he is. He leaves a body behind to fool the FBI/CIA into thinking he is dead. Jackman would have believed it too had he not seen him heading down the stairs and the surgically altered corpse. Berry was not hurt, the wire, the DEA story and her getting shot were all parts of a ploy for Jackman to trust and confide in her, making it easier for Travolta to make Jackman do what he wanted. Travolta didn't actually kill any hostages directly himself, (though he did put them in that situation, he is by no means Mr. Innocent) - had the police done what he asked, no one would have been hurt at all. So basically, he IS a good guy, but his methods are somewhat morally lacking.
Grumpy Scot