The event, which marked the classic comedy's 25th anniversary and re-release on Blu-ray, took place at London's Soho Hotel. Dave Berry and T4's Rick Edwards were also at the screening.
Rascal admitted that he was "scared" by the movie as a child, while TV presenter Berry told The Mirror: "I've read about Ghostbusters over the years that it's actually a very funny film but I just remember it being quite scary.
"When Sigourney Weaver's nightie came away when she lifted off the bed because Zorr was in there being quite erotic as well, as erotic as you can get for a five-year-old from South East London."
A third Ghostbusters flick is currently being developed by Lee Eisenberg, Gene Stupintsky as well as original stars Harold Ramis and Dan Aykroyd.