Whereas the majority of movie cameos tend to hit you with about as much subtlety as Michael Cera slapping Rihanna on the ass in This Is The End, sometimes they have the tendency to slip by without you noticing at all. Be this intentional on the part of the filmmakers, who are hoping to sneak somebody into the frames of their movies without you noticing, or the fact that said cameo flew past without giving you a moment to comprehend it, there's always the possibility that you're not going to find out about such things until the internet decides to help out. Which is what we hope to do right now, in fact: join us, then, as we take a look back at the year's sneakiest cameos, all of which proved far harder to point out than your regular "Oh God, look - it's Johnny Depp!" styled appearances. How many of these did you catch first time around?