Trivia: In the opening credits of Hitman, there are several scenes involving children training. Many of these scenes were from footage from the first season of Dark Angel (appeared on Fox on October 3, 2000).
During the Sword fight scene, 47 pulls a katana out of a dead agent's hand, in order to use it. It is covered and dripping with blood. However when he comes to use it a few seconds later, it is clean as can be.