2. The Bodyguard 2: Princess Diana

When you hear the title of the movie
The Bodyguard, the likelihood is that you're instantly thinking about Whitney Houston singing
that song, with Kevin Costner heroically lifting her to safety through the rain. You're not? Just me, then. The first movie won audiences the world over, of course, mainly because it was romantic in that '90s kind of way, and also because the audience was made up entirely of women who might fantasise about a situation of that sort. Am I right, ladies?
The Bodyguard 2, according to Kevin Costner, was something that was actually going to happen. That, in its own right, isn't that insane... but when you discover that the movie was
supposed to star Princess Diana, you begin to wonder whether you've accidently ingested a strange hallucinogenic mushroom. According to Kevin Costner, who revealed this bizarre notion last year, the actor/director had been in conversation with the Princess about a potential sequel:
"Diana and I had been talking about doing Bodyguard 2. I told her I would take care of her just the same way that I took care of Whitney. She wanted me to write it for her. I said: 'I'll tailor it for you if you're interested.' She goes: 'I am interested.'"
Though the untimely death of the Princess means that she can neither confirm nor deny that this was ever going to happen, I don't see why Costner would feel any particular need to make the whole thing up. That said, this would have likely been disastrous on every level. I can't say for certain, but I doubt Diana would have made a great actress - alongside Kevin "Wooden" Costner, this would've been about as entertaining a trip to a DIY outlet.