Neil McCauley: Roger Van Zant?
Roger Van Zant: Yeah, who's this?
Neil McCauley: You know who this is.
Roger Van Zant: Yes I do, yes I do. I sent a guy to deliver the package. He didn't call, is everything all right?
Neil McCauley: Tell you what, forget the money.
Roger Van Zant: What?
Neil McCauley: Forget the money.
Roger Van Zant: Wh...it's a lot of money. What are you doing? What do you mean, forget the money?
Neil McCauley: What am I doing? I'm talking to an empty telephone.
Roger Van Zant: I don't understand.
Neil McCauley: 'Cause there's a dead man on the other end of this fuckin' line.
When Neil (De Niro) breaks into Van Zant's apartment and shoots him, watch as Van Zandt flies backward. You can see a wire running up through the bottom of his sweat pants.
The final shoot-out scene at the airport with DeNiro and Pacino running across runways, avoiding being run over by jets, and winding up in the brush is an homage to the final scenes in 1968's 'Bullitt'.