“Nothing Important Happened Today II” marks the first tagline change since Season 7’s “Closure”. This episode ended the longest period without a tagline change.
The FBI Contacts, Witnesses and Contributors document shown as part of this episode’s title sequence includes the names DEFORM LUX, RANKLE WINTERS, and CALL SUNDAY – these are anagrams for Fox Mulder, Walter Skinner, and Dana Scully.