But that's not a bad movie.

Roger Corman reportedly made the original 'Little Shop of Horrors' on a bet that he couldn't make a complete film in 48 hours or less.

• Lord, have mercy on a country boy

Highlander II: The Quickening

• this is what co-star Michael Ironside had to say about the movie: " "Yeah, listen, I hated that script. We all did. Me, Sean [Connery], Chris [Lambert] we all were in it for the money on this one. I mean, it (the script) read as if it had been written by a thirteen year old boy. But I'd never played a barbarian swordsman before, and this was my first big evil mastermind type. I figured if I was going to do this stupid movie, I might as well have fun and go as far over the top as I possibly could. All that eye-rolling and foaming at the mouth was me deciding that if I was going to be in a piece of shït like that movie, I was going to be the most memorable fücking thing in it. And I think I succeeded."
  http://gradez.tumblr.com/

Heaven's Gate and Showgirls are the two most famous ones probably.
Showgirls is pretty bad but you have to admit, massively entertaining, and there has been so much written about why it turned out so bad. There's Gina Gershon saying she had to coach Elizabeth Berkley (who had only ever acted in a teen sitcom). There were rumors that Verhoeven was sleeping with Berkley. And then there's all the discussion about just what in the hell Eszterhas and Verhoeven were thinking with this movie.
Heaven's Gate is not nearly as bad as it's been made out to be (more like a mediocre film with some very pretty cinematography) and there's been a hell of a lot written about what the hell Michael Cimino was thinking. It seems he really could not see the forest for the trees and got bogged down in unnecessary detail. Oh, and then there was the matter of the botched release. After receiving poor reviews Cimino pulled it from theaters only a week after it's initial release, then re-released it after several months re-editing the film. Unsurprisingly this did not help the film's reputation. It's often said that it bankrupted United Artists and caused them to fold, although this is disputed. It probably did end the auteur era in american film though.

Wh Friday The 13th is a good movie!
Pretty funny story though.

Betsy Palmer signed on to do "Friday the 13th" as her car was pretty much kaput and the price of the new car she wanted was $10,000, which is exactly what she was offered to play Pamela Voorhees. She made the movie so she could get a new car. When she first read the script, Betsy said "This is the worst piece of $hit I've ever read", but in the end it all worked out!

I think it's interesting that Waters and company were so ready to be their perversely creative selves that they wasted no time.
Plus, I'd only just watched TDLS the day before.

Why do you think it's the best backstory?

As soon as John Waters heard about Diane Linklater's death, he and his friends went home and made "The Diane Linklater Story". It's only ten minutes long. The second half with Divine is very funny.