In the opening credits of “The X-Files” (a show whose return didn’t conceal the fact it was old enough to have a theme song) is an intentional error I hadn’t noticed until this season.
The ID badges in the opening credits are for “Federal Bureau of Justice, United States Department of Investigation.” The IMDB says this is intentional because “making a fake FBI badge, even for fictional purposes, is illegal.” Tonight is the last time we’ll see those badges on screen, with the series finale (and they probably mean it this time).
(Now, how can I age half as well as Gillian Anderson? THAT is a mystery worth investigating.)