New this month Continuity mistake: When Walt calls his wife at the beginning (the flashback), he tells her Bogdan is keeping him late. His wife also says she likes the name Holly for the baby. But if you watch the beginning episodes, Walt quits the car wash right away. And also finds out he's having a baby girl fairly quickly (episode 2 or 3 I think) Nowhere in that time frame did Walt and Jessie go cook. They had only cooked once so far, and then had to deal with Crazy 8 and the other dude. So Walt was never working for Bogdan except for maybe when they first cooked, but even then he would not yet have known he was having a girl. There is no way the timeline can work with that phone call flashback.
Character mistake: When Hank is brought to the hospital with gunshot wounds, the ambulance and its two EMTs are met outside by two doctors. One doctor says "Let's get him two grams of oxygen. What's his hemoglobin?" This episode's technical adviser was perhaps away for this scene. How much exactly is two grams of oxygen? Orders for administering oxygen would be given in liters, such as two liters per minute (LPM). The line is presumably meant to be 'two liters of oxygen'.
Revealing mistake: Jesse takes a hit from his pipe, at which point, you can see a vaporizer device in his hand. This is used in production to create the white vapor smoke that they exhale while smoking. It has a metal mouthpiece and what looks like a small LCD on it. It is not a glass meth pipe.
Continuity mistake: When Walt is sitting on the overpass it is clear that his car is parked on the part that straddles the median between the lanes, but when the shot is inside his car the view appears as if he is parked directly over the right lanes of traffic.
Continuity mistake: In the scene where the shootout starts in the previous episode, Walter is handcuffed in the back of the SUV and trying to get to the floorboard to avoid the gunfire, and his glasses eventually fall off. After the gunfight when he is yelling at Jack from the back of the SUV, his glasses are back on his face, which would be hard to do handcuffed.
Continuity mistake: When Pinkman and White are having breakfast in the diner, the items on the table keep changing in each shot. Specifically, the jelly, the milk, the cup with the cream and, most noticeably, the rolled napkin with the cutlery inside: Sometimes folded, others opened.
Visible crew/equipment: In the flashback scene where Jessie 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.