From self-referential nods to the director's previous works to gentle jibes aimed at the cast, cinema is full of private jokes and esoteric gags, sneaked in by the filmmaker (well, if you've got the power...). The question is, did you spot any of them?
And it isn't just the deliberate tricks that make it past the final edit, even the slickest films with the biggest budgets are riddled with bloopers (did somebody say 'Skyfall'?) that somehow make it onto the silver screen. Did you catch any of these the first time round?