Mulder and Scully's look-alike FBI counterparts are played by David Duchovny's stunt double and Gillian Anderson's stand-in, respectively.
Chris Carter wrote this episode whilst also juggling the demands of writing the pilot for The Lone Gunmen (2001) TV show.
The parts of Betty Templeton and Lulu Pfeiffer were written specifically for Kathy Griffin. The comedienne readily agreed. She was so impressed by the dedication of the cast and crew at putting in 16-hour days that she dropped some jokes about "whiny actors" from her comedy routine.
For Jack McGee's introductory scene - in which he screams from his jail cell at Agent Scully - the actor rehearsed several times at his normal volume before he filmed the actual scene at full pelt. This was to preserve his voice and not give him a headache.
A few seconds after the bumper stickers on Betty's car are first shown, the same stickers are shown on Lulu's car but on opposite sides and the white letters on black background are black on white.