11. Unwanted (?) Robin Hint
The Robin twist at the end of The Dark Knight Rises was a tad silly, but it wasn't the first reference to the caped crusader's sidekick, thanks to the sneaky addition of the suspiciously familiar looking R that one extra held up at the Gotham Rogues' match that Bane takes over. There's no mistaking the likeness to the Robin logo, no matter where the symbol came from... Apparently, this was a rare case of a fan adding their own Easter Egg to the film, having signed up to an extra in the exceptional Gotham Rogues sequence. But then, that hasn't stopped some conspiracy theorists claiming it was Nolan's plan all along.