Genuine reactions from actors that made the final cut

All of our favorite movies have intriguing stories, myths, and legends about what went on behind the scenes. Whether it's a director's peculiar style or an actor's uncompromising method acting, there's always something special that makes movies unique. Sometimes, however, what usually happens behind the scenes makes it to the final cut, and we might witness it without even knowing. There are countless instances of genuine surprises, flukes, and frights that made it onto the big screen, injecting a little bit of genuine reaction into our favorite action. Curious? Read on to learn about some of the instances of genuine reaction that made it into the final cut.