Continuity mistake: Hector goes behind the counter in Los Pollos Hermanos and helps himself to a drink. The cup is under a different dispenser (and therefore a different drink) each time the shot changes, but the audio of the dispensing and the cup being filled remains intact throughout.
Factual error: When Mike is meeting with Lydia in her office, you can see an undeveloped hillside from Lydia's office window with sagebrush and other desert shrubs common in New Mexico. However, Lydia's office is in Houston, Texas, where such plants do not grow. Houston also does not sit in the desert, it lies in a coastal plain where it is much greener than Albuquerque.
Continuity mistake: As Howard and Chuck are in a meeting about their lawyers' premiums going up, Chuck is spinning a pen around in his hand. He stop and lays it down as the woman tells them to not take it personally. The camera cuts to a different angle and suddenly he's got the pen spinning in his fingers once again. (00:10:43)
Continuity mistake: Mike sets a trap to taint a cartel's truck with drug residue. First, he inserts a bag of cocaine in a shoe, then throws the pair of shoes over a telephone wire. His plan is to shoot the hanging shoe so the cocaine powder pours out onto the truck as it passes under the wire. However, when he inserts the drugs it is in the right shoe, but later, it is the left shoe he shoots and has the powder in it. (00:29:30 - 00:38:00)
Continuity mistake: Jimmy shows up at Irene's door with a box and some balloons. From the side view as she opens the door, the balloon with flowers on it is closest to the door with the pink and blue peppermint swirl balloon behind it. When the camera cuts to looking at Jimmy from inside over Irene's shoulder, the peppermint balloon is now in front with the flower balloon up higher between it and the other balloon. (00:28:36)
Continuity mistake: While Kim is talking to Jimmy he is pulling of the tape off the wall. As she sits down to the couch, Jimmy's hands are at the same height as his head. After a cut, his hands on the wall are suddenly at a much higher level. About 50cm of pulling off the tape on the wall are being skipped. (00:40:37)
Continuity mistake: The newspaper Hector is reading when Domingo comes in keeps changing around. For example, when you see him reading the sports page, there's half a picture of a baseball player on the front and the bottom half should be seen on the side Hector is reading. When we see what he's reading, part of the picture is now a football player.
Continuity mistake: After the meeting and Howard pours a glass of drink for both him and Chuck, he walks to the end of the table and places his hands on a chair as he asks Chuck if he remembers Al McConnell. Chuck has just taken a drink and lowered his arm and glass down to the level of the table. The camera then cuts to Chuck and suddenly he's got his glass up to his face again. (00:12:25)