Continuity mistake: In the scene where Walt and his wife are talking at the breakfast table the milk carton is facing a certain way. Five seconds later it has completely turned the other direction. The wife is holding a baby, and no sound is heard to indicate that she moved the milk carton in any way. (00:10:17 - 00:10:22)
Continuity mistake: When Skylar is packing, one shot of her has one color clothes that she's putting in the suitcase and the next shot of her has different color clothes. This happens two or three times. (00:39:00)
Continuity mistake: Sitting outside a crack house looking for Jesse, Mike and Walt are talking in Mike's car. When Mike says he could just be mugged or shot, the camera is behind their heads. Walt turns his head towards Mike while he's saying this. When the camera angle changes, suddenly Walt is looking out of the passenger window again.
Continuity mistake: Throughout this entire season, the blue tape holding the new windscreen in place on Walt's car is constantly disappearing and reappearing. This happens throughout several episodes.
Suggested correction: The tape is only there while the adhesive sets in his continually new windshields, as he only just replaced the windshield and probably took off the tape off camera because it wouldn't add to the plot.
Continuity mistake: Walt is driving down a deserted road singing "A Horse with No Name." You can see the roadway behind him through the hole in the headrest. At first, the road is empty. But then a white vehicle quickly approaches. The camera angle changes and there are no vehicles behind him, but a police car coming from the opposite direction passes and makes a u-turn. When the camera angle is back inside Walt's car, the white vehicle turns out to be the police car that just made a u-turn. (00:01:00)
Continuity mistake: While Walt is out of his car and arguing with the police officer, there are other cars visible in the far distance behind him. The cars appear and disappear in between shots, there isn't time for them to pass and we don't hear them pass. (00:03:30)
Continuity mistake: When the two guys grab the Ouija board, the 2 games that were on top of the Ouija board disappear instantly. (00:22:30)
Continuity mistake: When Walt throws the pizza on the roof, it lands 5 rows up from the edge. When the camera cuts to on the garage roof, it's only 3 rows up. Also the amount of topping changes between the angles. (00:34:30)
Continuity mistake: Mike's car is not visible when Walt breaks into his own backyard. Mike is still there, as you see him hiding behind the corner, and later getting into his car.