Ghostbusters Reboot: 29 Easter Eggs, References & In-Jokes

29. The Paranormal Studies Gag

As spotted in the first trailers and marketing material for Ghostbusters, the white-board that Kirsten Wiig's Erin Gilbert stand in front of while lecturing to an empty room in her opening scene contains a viral marketing gag and a call back to the original films.

At the top of the scrawled formula, an equation that spells out ParanormalStudiesLab.com, which directs to a viral marketing website with a lot of the tech behind the new Ghostbusters in profile and schematics...

And of course, the name of the site comes from the original headquarters of Venkman, Spengler and Stantz before they're kicked off campus in the original movie.