4 Days Out - S2-E9
Visible crew/equipment: Walt and Jesse get stranded out in the desert. We see Walt cough up some blood and Jesse stand behind him. In this shot you can see the reflection of someone move in Walt's glasses, despite them being alone and still. (00:32:30)
Cancer Man - S1-E4
Visible crew/equipment: When we see a close up of Jesse stamping on the spliff you can see an orange marker on the floor where Jake is stood. (00:42:20)
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)
Kafkaesque - S3-E9
Visible crew/equipment: When Gomez is showing Hank the map of all the blue meth, the blue helium balloon behind Skyler shows the stage lights. (00:06:40)
A No-Rough-Stuff Type Deal - S1-E7
Visible crew/equipment: When Skyler is trying to return the tiara, the camera and operator are reflected in the glass cabinet. (00:26:40)
Visible crew/equipment: When Walter talks with Jesse outside the Mesa Credit Union, just after giving him the money to buy the RV, a boom mic pole can be seen reflected on Jesse's car door. (00:36:12)
...and the Bag's in the River - S1-E3
Visible crew/equipment: At the start when Jesse looks over his shoulder at Walt, a stage light and what appears to be a light screen are reflected in his mask. (00:02:00)
Visible crew/equipment: At the very beginning of the episode where the RV crashes against a rock in the middle of the desert, a camera badly hidden behind a bush can be seen on the right side of the screen immediately after the crash. (00:00:57)
Visible crew/equipment: When Walter puts the mask over Jesse's unconscious face after drugging Emilio and Krazy-8, in the POV shot of Jesse where the camera is looking up at Walter, the reflection of the camera can be seen in Walter's mask. (00:51:05)
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.
Visible crew/equipment: When explaining to Hank and Jr what the doctor thinks caused his memory loss, a light screen is reflected in his glasses. (00:40:30)
Visible crew/equipment: Just as Hank gets given his present at the office, several T marks are visible on the floor. (00:39:10)
Visible crew/equipment: As Walt and Jessie get into the car at the start a light screen is reflected in Jesse's glasses. (00:04:20)
Visible crew/equipment: In the scene after Walter took his son from the school and parks his car in front of their house (before the pizza scene), you can see the camera mounted on a crane while filming the scene reflected on the car's windscreen.
Visible crew/equipment: The camera equipment is visible in the bumper of the jeep in the scene where Walt drops Jr. off (before the pizza scene).
Visible crew/equipment: Near the beginning, there is a shot of the one-eyed toy. The camera is riding on the cart with it. You can see the shadow of the camera in the lower left frame.
4 Days Out - S2-E9
Visible crew/equipment: When Walt tells Jesse that the 19lbs of Meth works out at $672k each, a light screen is reflected in the very corner of Walt's glasses. (00:17:30)
Chosen answer: It is part of the ritual for la Santa Muerte. It is a sign of humility and sacrifice.
djm