The dramatic explosion at the start of the film was captured using 135 synchronized still cameras.
Thomas Jefferson did NOT shoot a man on the White house lawn for treason. This movie is the source of that rumor.
Vinnie Jones was going to do a stunt, but John Travolta stopped him, and a stuntman did it instead. The wire broke, and the stuntman fell sixty to seventy feet onto a concrete floor, breaking his spine.
Halle Berry agreed to the topless scene because she wanted to overcome her fear of doing nude scenes. An alternate version was also shot with her wearing a bikini top.
John Travolta turned down the part of Gabriel a total of six times. He changed his mind when he heard director Dominic Sena's take on it.