Ghostbusters (1984)

Based on his own infatuation with the supernatural, Dan Akroyd originally wrote Ghostbusters as a project for himself and John Belushi. Upon Belushi’s death, he paired with Harold Ramis to rewrite and produce one of the most popular films of the 80s.

While the reason isn’t known, producers sought to bring some brief cameos into the film to draw in crowds. Porn star Ron Jeremy makes a brief appearance in the film when onlookers are pausing to take in the horror of some serious phantasmic activity.