A film's opening is arguably the most important scene in any film you'll ever watch.
Often a director has to set the tone of their feature, inform the audience where they are and why they're here, and introduce them to characters they've sometimes never met all in the space of a few minutes.
So, you think that would be enough to keep them more than occupied, right?
Well, believe it or not, on top of all those vital opening components filmmakers also find the time to pump easter eggs, secret tricks, cameo appearances and blink-and-you'll-miss-them references into their all important first chapters.
Some of these are so subtle, you probably missed them entirely when you first caught the picture in your local cinema, whereas others are literally staring you right in the face and will likely make you feel a little silly once you realise what they were.
From Marvel Cinematic Universe entries to a galaxy far far away, there's always something new to learn about some of your favourite movies and hopefully these little hidden gems will make you want to rush back and give them one more watch just to check if there's anything else you missed.