At one point during the episode, Mulder and Scully identify a phone number the Pusher had called to be a golf driving range and pro-shop, to which Scully quips, "So he's a killer and a golfer", to which Mulder replies, "Rings a bell, huh?". This is a non-too-subtle reference to O.J. Simpson, alleged murderer and avid golfer.
Writer/executive producer Vince Gilligan's episodes contain numerous references to his girlfriend, Holly. Some of the more prominent examples of this: the name of the secretary in episode #3.17, "Pusher", Susanne Modeski's pseudonym in episode #5.3, "The Unusual Suspects", and Mulder and Scully running into the police at Holly Street in episode #7.12, "X-Cops".