Nowadays, the Marvel Cinematic Universe is probably about as popular as other very popular things - you know, like Jesus or One Direction. Over the past eight years, the comic book behemoth that is Marvel have successfully crafted one of the most impressive cinematic constructs ever conceived by people who are interested in devising things of that sort - a fully-fledged and interconnecting universe built out of multiple characters appearing in and across multiple movies that is constantly evolving before our very eyes. Hurrah! If you've missed the Marvel boat and - for some reason - are yet to glimpse a movie in the MCU canon, all we really have to say is: you're seriously missing out, pal. After all, the MCU is so impressively dense with information that it's sometimes difficult to keep up with everything that it's throwing at you. And yet, for the most patient and observant fans, there are an endless array of rewards to be found if you put in the time. But even the most patient and observant fans are bound to miss stuff sometimes. To celebrate that notion, then, just us as we take a look at 10 things that you probably didn't know about the Marvel Cinematic Universe. And if you did know these things, consider yourself a true fan... and in need of another hobby.