Given the densely packed detail of the average Marvel comic, it's no surprise to find that their filmic equivalents betray a similar level of intricacy. Clever cameos, whip-sharp references and many a 'blink and you'll miss it' moment pervade these uber-successful movies, offering audiences an amazing array of nods, hints and heartfelt thank-yous.
Like the X-Men's resident nemesis Mystique, some of the following Easter Eggs hide in plain sight, while others (like Cyclops) are pushed so far into the background as to become almost wholly unnecessary. This list shines a light on some of the very best Marvel movie examples. How many did you spot?