Corrected entry: When Nacho is on fire and one of the nuns does the shape of the cross on her chest, there is a boom mic in the top centre of the frame. This happens for several frames where the camera is on her.
Corrected entry: Nacho is raised in a Mexican orphanage by Mexican monks. So why, as a child, does he have an English Bible in his drawer? It couldn't be from his mother since his mother was a Lutheran missionary and the Catholic monks would regard a Lutheran version of the Bible as heresy.
In the scene when Jack Black is about to be unmasked and the kids are watching his match on TV, Chancho goes to to cover the TV. He is wearing a pink shirt but in the shot of him covering the TV he is wearing a white singlet.