Continuity mistake: At the beginning of the episode Jesse and Jane leave the art gallery and go to his car. From the outside, Jesse's car is right up close to the Porsche in front, but the inside shots show they are about 4-5 feet back from it.
Continuity mistake: In the car driving after seeing Saul, Skyler tells Walt "This is what happens when you decide to pay the bills with drug money" The shot from behind shows Walt's head completely in the shadows. When it cuts to a closer angle, suddenly he has light around his head and part of his neck with only a small shadow cast on him.
Continuity mistake: When Jesse and Andrea are making out on the couch, they discuss having a bear. And she mentions she's cleaned out of anything else. During this sentence, they are positioned where Jesse is leaning forward looking down at her. But mid sentence there is a cut, and suddenly he's leaning his head back with her looking down at him.
Audio problem: After Walt Jr and Skylar leave the room, Marie starts to leave. The camera is focused on Hank once she walks off screen and you can hear the sound of the door closing behind her. It then cuts to showing her suddenly just getting to the door and opening it to walk out.
Continuity mistake: When Walt is talking to Saul near the start, we see him unbalance the scales on the table in front of him then lean back. Camera cuts to Saul for a few seconds then shows Walt from behind Saul. In this angle, the scales are now balanced. (00:16:50)
Continuity mistake: Mike Ehrmantraut takes Jesse to a house in the desert. He pulls up behind a dark blue car, which vanishes in the next shot, and then reappears.
Continuity mistake: When Jessie, Victor and Mike pull into Gus' chicken plant they pull up behind Gus' car, but when they get out the car is gone, and when they start to walk to the building the car is back.
Continuity mistake: When Mike throws the shoe, it lands well past the end of the wall. Camera cuts and it's back level with the end of the wall. (00:16:20)
Chosen answer: It is part of the ritual for la Santa Muerte. It is a sign of humility and sacrifice.
djm