1. The Infamous "Ghost" In The Background - Three Men & A Baby
And finally, our list ends with one of the most prolific urban legends in Hollywood history, the widespread 90s myth that the ghost of a young boy appears in the 1987 hit comedy Three Men and a Baby.
Roughly an hour into the film, Jack (Ted Danson) is talking to his mother (Celeste Holm) as they walk through his house, and what appears to be a shotgun or rifle is leaned against one of the windows.
Then when the pair walk back past this area 30 seconds later, the figure of what appears to be the young boy is now visible by the same window.
Back in the days of grotty, blurry VHS, this was far more difficult to disprove - beyond, you know, ghosts not being real and all - and so word spread that the boy had lived in the apartment where the scene was filmed and shot himself with a shotgun sometime prior, with his ghost lingering in cinematic perpetuity forever more.
But as it turns out, the figure is actually a cardboard standee of Jack himself, as can be briefly seen later in the movie (below).
This is actually an accidental secret, though, as a subplot involving Jack appearing in a dog food commercial - hence the standee - was cut from the film in post-production, making it far tougher for audiences to understand why a shadowy figure would be standing by the window at all.
So, this is entirely unintentional on the part of director Leonard Nimoy - yes, that one - but the result is nevertheless infamous (and weird) enough that it undeniably deserves recognition regardless.