Django Unchained (2012)
In the scene where Calvin Candie smashes his hand on the dinner table, DiCaprio accidentally crushed and broke a small glass with his palm. He actually cut his palm open and began to bleed profusely, but stayed in character until the end of the scene. This scene was used in the final cut. After they called cut, the room erupted into a standing ovation for DiCaprio’s professionalism.