Box Cutter - S4-E1
Continuity mistake: When Gus Fring kills Victor and throws him to the ground, a stream of blood runs between Pinkman's and White's legs. When the angle cuts, the stream is now a puddle around Victor's head, no blood near the legs.
Box Cutter - S4-E1
Continuity mistake: At the start, there are 2 foam pieces on the floor when Gale opens the box. When he goes to pick them up there are 3. (00:00:30)
Box Cutter - S4-E1
Continuity mistake: When trying to get Victor into the barrel, Walt sits against the barrel in one shot but is stood holding it in the next. (00:37:00)
Box Cutter - S4-E1
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.
Box Cutter - S4-E1
Continuity mistake: When Gus is getting his shirt back on, he's doing up the first couple of buttons. Camera cuts and his shirt is done up and his tie is done. (00:34:45)
Box Cutter - S4-E1
Continuity mistake: When Gus is putting his orange jumpsuit on, he puts one shoulder on, camera cuts and he puts it on again. (00:29:00)
Open House - S4-E3
Continuity mistake: In the scene whee Walt and Skylar are talking to Saul, his shirt unbuttons.
Box Cutter - S4-E1
Continuity mistake: When Marie returns to her home and we see Hank bidding online on crystals, when she walks in and says she's back the side view of him shows his mouth hanging partly open. When it cuts to a different angle, his mouth is shut.
Continuity mistake: Mike yells at Jessie to make himself useful and find a gun. The shadows in these two scenes are very long indicating it was shot late in the day. In the next shots and rest of the sequence, the sun is overhead.
Box Cutter - S4-E1
Continuity mistake: When Gus drops the Stanley knife, it's position in relation to Walt changes. In one shot it's horizontal to their position then it's on an angle. (00:33:30)
Continuity mistake: Walt comes over to Jesse's house to tell him about Hank investigating Gale's murder. Jesse is shaving some guy's head. In one shot, the guy getting shaved has less hair. More hair instantly appears seconds later. (00:26:20)
Continuity mistake: When Gus walks towards the nursing home towards the end of the episode, two flags in the background stop waving, but in the next shot they suddenly wave again.
Problem Dog - S4-E7
Continuity mistake: Skyler makes Walt return the Challenger to the car dealership, but Walt decides to take it to a parking lot and spin donuts with it. Just before he crashes, he's spinning clockwise, starts to lose control, and tries to correct it by turning the steering wheel sharply to the left. However, from the overhead shot, the marks on the pavement indicate he was spinning counter-clockwise and tried to correct by turning right. (00:05:50)
Continuity mistake: Walt and Skylar are talking. Walt is lying on the bed after just waking up. In one scene, there is a blanket lying next to him. In another scene, he is covered up by that blanket. (00:05:12 - 00:06:00)
Continuity mistake: When Walt is practicing his pistol draw in his apartment, he drags over a chair in which to sit during his practice. When he is dragging it, he aligns it directly against the carpet. However, a few seconds later, another shot shows that the chair is now inches away from the carpet, despite him never adjusting the chair.
Crawl Space - S4-E11
Continuity mistake: In the opening scene, the medical team is treating Gus. The oral syringe of medication is drawn to "1", in the next scene, it is completely full when the man administers the drug. (00:01:20)
Continuity mistake: After Gus goes to the restroom, there's a shot of the cartel leader smoking a cigar as he turns to look at Jesse. The cigar is burnt down nearly to the band around it where his fingers are. When it cuts to a different angle to him taking it out of his mouth, suddenly there is much more cigar left above that band.
Chosen answer: I'm not sure how far you are into the show but he does eventually come up with a way to launder it (wont spoil it for you but rest assured, when he gets a lawyer the show gets much better!) and in the final season he also comes up with a way to give his children his money without the cops or the DA knowing it came from him.
The_Iceman