One of Udre Belicoff's henchman wears a fake eyelash on his right eye just like Alex DeLarge in Stanley Kubrick's A Clockwork Orange.
in the subway scene, Agent 47 and another Hitman do a little 'ballet of bloodshed' dance in almost the exact same why Chow Yun Fat and Danny Lee do in Jennie's apartment in The Killer. The movement, camera angle and choreography is nod to John Woo's HK film.
Many scenes from the opening are reused from the Pilot episode of Dark Angel. Geneva Locke (who played Young Max on the show) is seen extensivly
2 teenagers are seen playing the level "Death of a Showman" as 47 smashed through their window.
Clips shown for the review.