Continuity mistake: Jules feels icky at the sight of the abominable mess left on a desk by the employees. In the close-up of the guy that dumps a box on it, the items are not in the same position as in the other shots - look at the Kate Moss book at the top, and at the red striped shirt that suddenly shows its label. (00:23:15)
Continuity mistake: Jay is telling Ben the story of his faux pas with Becky. When he gets to the part about the mail and mentions the subject, the same person in the background (dark green short, light bag) is at the same spot even after a long cut on Jay that details the quantity of OS in "sorry." Same thing a few seconds later when he talks about the emoticon's tear and another girl, closer to him in the foreground, moves right to left. (00:22:35)
Continuity mistake: Ben is tutoring Davis when Jay interrupts them saying "Hey, look, here she comes, watch how she won't even..." The sentence is spoken across two separate shots, and in the second he's pointing at himself, in the first he is not. (00:21:35)
Continuity mistake: Ben is talking to the secretary about the 3:55 appointment. When Becky points at the door to Jules' office, she is holding a pen that vanishes in the next shot. (00:17:35)
Continuity mistake: Asked by Jay, Ben says that he's gonna be a personal intern. A woman on the background is walking left to right. "Nice", he immediately replies, and the woman meanwhile already reached the other side of the room. (00:15:45)
Continuity mistake: When De Niro does a De Niro face at the intern that will help him with the laptop a moment later, he has his leather organizer in hand. He then opens the briefcase, which contains also the organizer. (00:15:00)
Continuity mistake: On the first day as intern, Ben sits down at the desk and there's a wide shot of the room. The 'normal age' intern opens the laptop immediately, but when we see a moment later that he empties his bag's content on the desk, the laptop is closed. (00:14:45)
Continuity mistake: When Jules' secretary follows her and tells her about the meeting and then her mom, a black guy in a blue shirt and grey sweater walks around the line of desks in the background twice in a row and carries a folder with a different hand in the first 2 shots. Similarly, a girl with a pink sweater repeats the action (walking past them and checking them out). (00:07:40)
Continuity mistake: Jules' secretary is telling her about all the stuff she has to do now that she's done being the best customer service gal ever. She said that she wants to implement online shopping with friends. The secretary has the pen at the ready in front of the post-it notes. Next shot (Jules says "E-mail me that idea") and the secretary only then is pulling the pen out from behind the notes. (00:07:35)
Continuity mistake: Patty reminds Ben that he's not getting any younger as she uses her left hand to make a couple of gestures (she touches her chin, then her hair). Neither is linked to the hand position in the other shots. (00:04:30)
Continuity mistake: When Patty tells Ben that she could add salad to his frozen lasagna and turn it into a dinner for two, De Niro one moment is holding the shopping back with his left hand on the handles, and the next he has the bag in his arms. Besides the little jump in montage (which anyway does come off as pretty natural), the double set of handles overlap in one camera angle, and they diverge in the other. (00:04:05)
Continuity mistake: Ben is commenting the flyer with the flirty woman he's not interested in. He asks, leaving the phrase hanging, "Isn't that the outfit that was...?" Gesticulating, he waves the flyer towards his left, but he's holding it still in front of Patty in the reverse angle. (00:03:30)
