Continuity: When he is playing Tetris, he is playing a different game every time.

Continuity: In the scene near the end of the movie where Peter apologizes to Joanna, Joanna is shown either in her red shirt and holding her blue jacket, or wearing her blue jacket. For instance, as Joanna is moving in to kiss Peter, she is holding the jacket, but as they embrace, she is wearing it. In the blue jacket cuts, it is much less windy, and Joanna's hair is styled differently than it is in the red shirt cuts, where her hair is blowing due to the wind.

Continuity: When Peter is shutting his computer down to try to escape his boss, one of the cuts shows that it's an OptiPlex monitor (us computer people will recognise this), then they cut back to Peter, back to the monitor and there's a piece of black electrical tape covering up the company logo on a completely different monitor.

Continuity: Toward the end of the scene where Michael, Peter and Samir are smashing the printer, the camera pulls back to show all the printer's parts around it on the grass, and its cover is off. When Michael goes back for one more blow, the printer's cover is still on it.

Continuity: When Peter goes to see the Bobs for the first time, he comes in, there's the Bobs sitting on the right side of the desk, and the row of empty chairs on the left. One of the chairs is not pushed in and turned left but when Peter comes back to sit down after getting his water it is pushed in and straight.

Continuity: During Tom's BBQ when Michael Bolton and Samir are asking Tom's lawyer about prison you see Michael lose grip and drop his cup with a piece of ice hitting Samir in the head. When the ice hits him he's holding the cup in his left hand but when the camera angle changes the cup shows up in his right hand.

Continuity: In the restaurant scene the volume of the water in the glass in front of Jennifer Aniston continually changes from full to half-full depending upon whether Aniston or Livingston is talking.

Continuity: In the scene with Samir, Michael, Peter, and Tom in the office talking about Tom's 'jump to conclusions' mat, the army men in the background on Peter's cubicle change positions. Shots of Michael show the kneeling man with the bazooka on one side of the minesweeper, shots of Peter show them in reversed positions.

Continuity: In the scene where they are smashing the copier, they show a slow-motion of Samir lifting his right leg to smash the copier, the camera cuts away and then comes back showing him coming down with his left leg instead of his right.

Continuity: In the scene where Lumbergh is talking to Milton in the building basement, his ever-present cup of coffee switches hands between shots.

Continuity: In addition to the mistake about Joanna's hair on the way back from the party: on the way TO the party, when the camera is on Joanna her window is up and her hair is still. But when the camera is on Peter, Joanna's window is obviously down, because her hair is blowing.

Continuity: When the guys go to Flinger's for coffee, we see that the little cardboard triangle thing in the middle of the table advertising new additions to the menu (most restaurants have these) is facing the camera with 3 lines of text reading "Try our Jalapeno Poppers." In all the shots with that triangle thing in it after that, it has 5 lines of text facing the camera reading something different.

Continuity: In the scene where Michael and Peter are in Michael's apartment, sitting and talking, we see Michael has a blue shirt which is spot-free. Right before they cut to the scene at the bar, we see that he has 2 small stains on the upper right of his shirt.

Continuity: In the scene when Peter returns to the company and sees that it's on fire, his hair is coiffed and partially in his face. In the next shot, as he watches Milton skulk away, his hair is cut short and totally out of his face.

Continuity: When Michael gets pulled away from beating the copier, he has a cord in his hand which he drops before going back. They pull him away again and the cord is gone, but in the last shot it in his hand again.

Continuity: When Peter is on the freeway thinking of changing into the left lane, the vehicles are different between the shots of his face and the shots looking ahead. Then when he changes lanes there was a Mitsubishi Mirage in front of him and a blue Dakota truck a few cars ahead, yet both are gone when we see the lane he left begin to move. Then when he changes back into the right lane, we see a motorcycle up ahead in the lane he left, yet in the next forward shot, the motorbike is gone.

Audio problem: In the scene where Peter, Michael and Samir are talking about Joanna sleeping with Lumbergh, Peter realizes that he had the wrong Lumbergh and says, "you mean Ron Lumbergh, the Innatrode guy, the young guy?" But if you watch his lips, he does not say Innatrode.

Factual error: All of the computers show a Mac OS when they're booted up. However, when Peter is shutting his computer down to try to escape his boss, the computer shuts down to a C: prompt. For those not technically minded, a C: prompt is only seen on IBM-compatible PCs, never on Macs.

Continuity: When Bill Lumbergh pulls into his parking space at Initech, the sign reads "Reserved for Bill Lumbergh, Division V.P." When Peter later pulls into the same space the sign only reads "Reserved for Bill Lumbergh."

Continuity: In the scene where Peter and Michael are in Michael's apartment discussing his idea for a virus, we see Michael put down his beer on the table. The camera cuts to a shot of Peter and we see Michael from the side. He puts his beer on the table and just as he sets it down the camera goes back to a shot of Michael from the front and his hand is behind the beer in a sort of fist. There's no possible way he could have set the beer down and removed his hand from it in the time it takes to switch camera shots.