Visible crew/equipment: In the scene at the very end, Walter breaks into Jesse's house to take all of their product. As he leaves the kitchen, just as he passes the fridge, Jesse (passed out in this scene) or a crew member can be seen peeking around a doorframe. (00:46:25)
Visible crew/equipment: When Combo is watching a black car parked in front of him while he was dealing as the episode started (a few moments before he's killed), a stage light can be seen reflected in his sunglasses.
Chosen answer: It is part of the ritual for la Santa Muerte. It is a sign of humility and sacrifice.
djm