Visible crew/equipment: At the very end of the episode, right after he tells Jesse how he used the red phosphorus to kill the gunmen, Walt leans down to vomit. You can see his microphone transmitter under his shirt. (00:54:20)
Visible crew/equipment: When Skyler is rubbing oil on her stomach and preparing herself in the bathroom, a camera and cameraman's hand is visible for about a second from the left side of the mirror. (00:10:30)
Ozymandias - S5-E14
Visible crew/equipment: Skyler pulls up in her car at the home, talking to Walter Jr. about the truck in the driveway. During this scene the camera comes down to her side of the car. Its reflection is visible in the glass of the driver's side window. (00:32:50)
Visible crew/equipment: Jesse and Mike are driving to the first pickup spot in the desert. The camera pans down over the windmill/pump with the car driving towards us and a classic BB desert scene in the distance. A cameraman is visible in the bottom right of the shot. (00:08:50)
Visible crew/equipment: When Walter walks towards Jesse's house when he hasn't shown up for work a camera and boom microphone shadow is shown on his back. (00:40:10)
Green Light - S3-E4
Visible crew/equipment: When Hank pulls up on the side of the road to answer his phone, the camera crew are reflected in the Jeep's grill. (00:31:00)
4 Days Out - S2-E9
Visible crew/equipment: The boom mic is visible above Walter as he tries to convince Jesse he is too dehydrated to walk after they are stranded in the middle of the desert in the RV with a dead battery. (00:34:27)
Negro Y Azul - S2-E7
Visible crew/equipment: When we are shown the blue truck at the gas station, there is an entire film crew reflected in the chrome bumper. (00:18:15)
A No-Rough-Stuff Type Deal - S1-E7
Visible crew/equipment: When Tuco is beating the other thug to death, the camera pans first on Walter, then Jesse. When it is on Jesse, the entire crew can be seen in the reflection of his sunglasses. (00:45:35)
4 Days Out - S2-E9
Visible crew/equipment: When Jesse declares he's going to start walking and sits up in the cot, Walt reaches out to him and a boom mic is visible at the top of the screen. (00:34:25)
Box Cutter - S4-E1
Visible crew/equipment: When Skyler gets out her car after speaking to Saul, if you watch the chrome on the door you can see a boom mic moving. (00:18:25)
Visible crew/equipment: When Walter is talking to the CCTV camera, a microphone is visible just below the 'C' in the word Cam. (00:29:54)
Visible crew/equipment: Walt just ordered to kill all Mike's witnesses in prison. While it shows one of them stop in front of the locked door and get killed by the other prisoners, a cameraman is reflected in the glass door.
Visible crew/equipment: During the shot from the interior of the car of Hank following Jesse, a camera man in a green T-shirt can be seen crouching down on the road to the right of the screen. (00:30:40)
Visible crew/equipment: Just as Walt is saying the line about checking to see if the other one is dead in the RV, the edge of the set comes into view very briefly on the right hand side. (00:15:10)
Visible crew/equipment: In the flashback scene where Jesse breaks into the Whites' house and starts pouring gasoline everywhere before Hank stops him from burning the house down, you can see the outline of a crew member exiting the right side of the dark living room at the beginning of the shot. (00:21:35)
Green Light - S3-E4
Visible crew/equipment: Skyler is making copies and the scene starts with a shot looking down into the copier (the Green Light). When the shot lightens a bit as the copier continues, you can see the camera lens. This makes sense because the camera is sitting directly on the copier looking down.
4 Days Out - S2-E9
Visible crew/equipment: At the end, when outside the airport, the camera zooms in on Walt's face. When the camera does, keep an eye on Walt's left eye. A black camera can be seen in the glass increasing in size as the camera zooms in. (00:40:40)
Chosen answer: It is part of the ritual for la Santa Muerte. It is a sign of humility and sacrifice.
djm