10 Horror Movies That Made It Up As They Went Along (But Were Awesome Anyway)

It's hard to comprehend just how influential Jaws was, and still is. Not only was Steven Spielberg's movie the first summer blockbuster, it made people so terrified of sharks, beach holidays suffered a noticeable decline throughout the United States after the film's release.

This is astounding considering the Great White is only in the movie for a couple of minutes. Although some people believe this was done deliberately to build up suspense, it was actually because the shark animatronic kept malfunctioning. Spielberg had so little to work with, he had to incorporate footage of a real shark after it accidentally got caught in a net during filming.

Although we see the murderous shark in the climax, Spielberg knew audiences would be frustrated if the nasty fishy didn't appear at all for the first 75% of the movie.

To get around this, Spielberg shot most of the attack scenes from the point-of-view of the villainous creature. Spielberg had visionary composer, John Williams, perform a score for these scenes to avoid them coming across as dull. Despite the fact Spielberg initially HATED this melody, it was the most effective tool at selling the movie, and has become one of the most (and parodied) tunes in cinematic history.

If the animatronic worked perfectly, the POV shots and the iconic theme song probably would have never come to fruition.