Character mistake: When it briefly shows the sign for their wedding rehearsal dinner, they spell Jim's last name wrong. The sign reads "Beesly-Halpret" wedding rehearsal dinner, not Halpert. (00:11:00)
Continuity mistake: Near the end of the episode when Robert California is escorting Erin out of the office, they are already in the parking lot speaking while it cuts to a shot of a concerned Andy in the conference room watching them from the window. A few moments later, Andy is shown saying goodbye to his girlfriend, while watching Robert and Erin leave the office. This should not be possible as they were shown to be in the parking lot already in a previous scene, with Andy watching as well. (00:18:38)
Revealing mistake: Michael is on his computer trying to open up PowerPoint in front of everyone in the conference room. He says "what we have to do here is go to run" and he clicks the run icon. However on Windows XP (the version he is using) and all other versions of Windows, clicking "Run" would open a separate window where you would type the name of the program. However, what appears on screen is a context menu as if he had clicked the "All Programs" button. You can even see the highlighted "All programs" button indicating that it was actually pressed. They likely had a PowerPoint presentation running in full screen with screenshots of a Windows desktop on each slide. As Steve clicked arbitrarily on the screen, it would trigger the next slide to appear thus creating the illusion that he was interacting with the operating system. (00:19:16)
The Meeting - S6-E2
Character mistake: When Dwight and Toby drive by Darryl's house to investigate his injury, a New York Yankees sign is on the front porch of Darryl's home. Throughout the show, however, it is strongly implied that Darryl is a Philadelphia Phillies fan. This is a character contradiction. (00:10:19)
The Alliance - S1-E4
Continuity mistake: Jim writes in Meredith's birthday card that she is an accountant, but later in the series it's said that she's a customer relations rep instead.
Gettysburg - S8-E8
Continuity mistake: While Andy continues the tour, Gabe stays behind to perform as Abraham Lincoln. Later on we see Gabe with the others, we even get a close up. A while later, when everyone is tired and sitting on the grass, Gabe doesn't seem to be there. Eventually the episode ends with Gabe finishing his performance.
Continuity mistake: Michael and Dwight arrive at Wallace's house and discover that Michael is dressed like the servants, so they choose to exchange shirts. Behind the catering van, Michael removes his jacket and throws it on Dwight's shoulder, who grabs it and puts it between his legs. The frame switches from front to side, showing Michael removing his tie and hanging it on the van's mirror. When the frame goes back to front, Michael is shown still with his tie on, and throwing the jacket again, missing Dwight. (00:05:41)
Continuity mistake: In the episode's intro, as Dwight's aunt died, he explains the Schrute custom of inviting someone or not, by throwing red dirt or black soil at the person's face. In the first shot, Dwight shows the red dirt bucket by lifting his left hand, but when the camera angle changes to the side, you can see his right hand is lifted up with the other bucket. The camera returns to the front as he is still lowering his left arm, and then he proceeds to lift the black soil bucket with the right arm. (00:00:48)
Other mistake: When Jim is editing the audiobook of Jo's autobiography, the waveform displayed on his computer program is inaccurate to the phonetics of the phrase being uttered. The crew of the show simply pasted in a random waveform of someone speaking a different sentence. There are a number of ways to tell it is inaccurate, but one is the periodicity of the waveform during the sibilant [s], which appear be noisy and not periodic. (00:15:20)
Happy Hour - S6-E20
Continuity mistake: When Michael is doing press-ups Angela is sat, then she stands to see what's going on - away from her chair, it cuts to another shot, and she is sat down again.
Audio problem: When Ryan is saying "Angela drafted me", the audio is spliced after the word Angela and his exhaling is audibly cut off. (00:02:50)
Continuity mistake: When Dwight goes to write the idea that Erin had of a coat check on the whiteboard, he begins to write cop, but in the next cut, the P is changed to an A for coat check. (00:09:40)
Other mistake: When Michael and Erin go back into Michael's office and start the video on Michael's computer, the "Play" button hasn't changed even though the video is playing. It should have changed to the pause button.
Continuity mistake: As Creed is catching the football, he drops a folder he had in hand into his lap. In the next shot, the folder is gone. (00:00:45)
Launch Party - S4-E3
Factual error: Michael and Jim are driving from their Scranton, Pennsylvania office to the company's headquarters in New York City for a website Launch Party. However, during the drive, it is clear by looking out the car windows at the mountainous and desert landscape that they are in California, where the show was largely filmed, and not in Pennsylvania, which does not remotely resemble that type of geography.
Continuity mistake: They take a pledge to "We all drink them all" referring to the espresso flavors. Angela puts her hand on top of the pile and it flips between Oscar's hand and Stanley's hand under hers depending on the camera angle.
Continuity mistake: When Michael begins the conversation with Jo, the door behind him is closed. After a few lines, the door is open. (00:19:10)
Continuity mistake: When Jim and Michael are in the conference room with Jo, Michael messes up Jim's hair. A few shots of Jim later, his hair is nicely combed again.
Answer: In the 2007 episode "Ben Franklin" when Jim is talking to Pam there is a candy bar with a purple wrapper that says "Picar-" I assume picaroon, it's hard to see past Pam. I found this trying to investigate what that candy bar is lol.