When you watch a movie, do you ever find yourself asking these questions: - How did they think of that? - Where did the idea come from? - Why has no one ever thought of that? Well if you do, you're not alone. It's our tendency as the audience to try and know more about the movies we watch. In our hunt for knowledge, we often end up on movie sites like the IMDb. Hence, to quench your thirst about your movie knowledge and to make you look like a cinema-God in front of your friends, we're bringing to you the strangest of inspirations behind some of the most popular movies ever made. So, kick back with your laptop/phone/desktop. It's going to be a bumpy ride! Back to The Future Inspiration: high school yearbook In the '80s, writer Bob Gale was visiting his parents in St. Louis, Missouri, where he bumped into his father's high school year book. In an interview with Empire magazine, Bob said: "Gee, if I went to high school with my dad, would I have been friends with him?" The movie series that continues to inspire generations after it, came out of a yearbook.

Pirates Of The Caribbean

Inspiration: theme park ride

In 1967, Walt Disney had the idea for a movie-based on one of his favourite rides in Disney World. The fact that it took over 35 years for the idea to materialize, only goes to show how Mr Walt was way ahead of his time.

A Nightmare on Elm Street

Inspiration: newspaper article

This is the last movie that should have been inspired by real events but we guess, truth is stranger than fiction. The idea behind this cult horror film emerged out of a newspaper article that reported on people who died in their sleep after having a recurring nightmare.

Nope, not sleeping tonight.