Ghostbusters was a film about an organisation that fought ghosts.

When Graham Stevens told Ace that he was of Paranormal Investigations, Ace asked if he meant like Ghostbusters. (PROSE: Cat's Cradle: Witch Mark)

Joel Mintz wore a Real Ghostbusters t-shirt. (PROSE: The Room With No Doors)

When investigating the Ghost Shifts, the Tenth Doctor referenced the theme song when he brought out a device to track them, asking Rose, "Who you gonna call?", to which she replied, "Ghostbusters!" The Doctor added "I ain't afraid of no ghosts!". (TV: Army of Ghosts)

The entries in the series were among Joe Sterling's favourite films. (PROSE: Almost Perfect)

In Ashen Hill Manor, Rani Chandra wished she had a proton pack from the movie while trying to find a ghostly entity. Clyde Langer agreed, adding that they even made boilersuits look cool. Clyde also said, "I ain't afraid of no ghost", part of the Ghostbusters theme tune. (TV: The Eternity Trap)

Clara Oswald introduced the Eleventh Doctor and herself to Emma Grayling and Alec Palmer as "Ghostbusters". (TV: Hide)

Cass referred to the Twelfth Doctor and Clara Oswald as "ghostbusters". (TV: Under the Lake)

In November 2016, Charlie thought that Tanya Adeola wanted them to be ghost busters, to which Matteusz retorted that he would be Kate McKinnon because she had the best hair. (PROSE: The Stone House)