The cast of Ghostbusters reunited on Josh Gad's Reunited Apart YouTube series. Most of the original stars were present like Bill Murray,Dan Aykroyd,Ernie Hudson,Sigourney Weaver and Annie Potts joined by director Ivan Reitman and his son,Jason Reitman, who helmed the upcoming 2021 sequel Ghostbusters: Afterlife. One of things revealed in the video was from Aykroyd, who said that "80%" of the dialogue was improvised. Special guests included super-fan Kumail Nanjiani and Ray Parker Junior, who sang the movie's theme song. The hat that Bill Murray has on is a homage to the State Puff Marshmallow.OK, who's paying homage to Slimer??!