12 Years Ago, The X-Files Crossed Over with Ghostbusters in a Comic
Originally published as: 12 Years Ago, 'The X-Files' Had a Crossover With One of the Biggest Sci-Fi Films Ever
The X-Files is the type of sci-fi series that opens the door to any number of crossovers. It featured a special crossover with creator Chris Carter's other mystery-themed show, Millennium.