More than most, the latest episode of The X-Files (“Mulder & Scully Meet the Were-Monster,” written and directed by Darin Morgan) is filled to the brim with Easter eggs, callback characters, and other assorted references. We’ve attempted to gather as many of these as possible; fellow Philes, call out any we missed in the comments.
Source: Every Easter Egg in X-Files Were-Monster Episode — Vulture