When De Palma was originally considering either Pacino or Dreyfuss for the role of Jack he was also considering either Julie Christie or Dyan Cannon for the role of the prostitute, Sally.

One of the original choices for the role of Sally had Jack been played by an older actor.

Dreyfuss was one of De Palma's original considerations for the role of Jack.

Director Brian De Palma was originally considering actors like Pacino or Richard Dreyfuss for the role of Jack.