When Miki and Maggie first meet, he says he bets she can't even say the F-word. Marianne Faithfull, who plays Maggie, was, in fact, the first person to say the F-word in a movie, in I'll Never Forget What's'isname (1967).
When Maggie enters the office of Miki to accept the job, he's seen playing a videogame. The game music is from Super Mario, and when he raises his eyes to look at Maggie, the death sound is heard.