The "clay pot as recording media" plot device was investigated in "MythBusters" (2003). They determined that it was so highly unlikely as to be impossible.
Scully tells Mulder that she thinks Téa Leoni has a crush on him, and Mulder wonders how she could. Téa Leoni is David Duchovny’s wife in real life.
When Garry Shandling meets Fox Mulder, he asks, "Do you dress on the right or the left?" When men's pants are tailored, extra room is provided in one of the pants legs, either the right or left, to accommodate the wearer's genitalia. This is the side on which one "dresses". Note that the exchange ends with Shandling calling out, "Wardrobe!"
During the early 1980s, a number of documents purporting to be original papers relating to the origin and development of the Church of Jesus Christ of Latter-Day Saints (the Mormon Church) appeared on the collector's market. These documents, if true, would have cast some aspects of Mormon history and tradition in a dubious if not negative light; the most famous example was the so-called "Salamander Letter," which the church itself bought and which claimed that the founder of Mormonism, Joseph Smith, did not really see an angel (as he said he had) but instead was visited by a talking salamander. These documents were eventually all revealed to be the forgeries of a formerly devout Mormon named Mark Hofmann. Many elements of this episode's plot, including the similarity of the forgers' names and the priest obtaining the forged document that he considers blasphemous, are drawn from the Mark Hofmann case.