In the scene where Leonardo DiCaprio’s character Calvin Candie smashes the palm of his hand on the dinner table, the actor broke a glass under his hand and really began to bleed. DiCaprio ignored it, stayed in character, and continued with the scene.
Django Unchained (2012)

Large lights suspended over the set of were used to create moonlight.
Django Unchained (2012)
Joseph Gordon-Levitt performed all but one of his own stunts during the fight scene in the spinning hallway.
Inception (2010)
Both Kate Winslet and Leonardo DiCaprio learned how to dance the polka for the scenes set at the party in the third-class compartments.
The running time of 2 hours 28 min is a reference to the original length of Edith Piaf’s song “Non, je ne regrette rien”, which lasts (on its first recorded edition) 2 minutes 28 seconds.
Inception (2010)
Ariadne’s hair is in a tight bun in the hotel sequence so filmmakers didn’t have to figure out how her hair should move in zero-gravity.
Inception (2010)