When Jip talks to the manager of the Asylum, Jip asks to use the phone to call his assistant. While he is on the phone, the camera flicks back the manager. In this shot, the phone Jip is supposed to be calling on is clearly visible in the foreground, still on the hook.
When Koop is selling records to the hip hop guy in the beginning of the movie, the needle jumps. The last time that we see Hip Hop Guy from Koop's perspective, the needle has jumped onto the slipmat, and then in the next shot, the needle jumps back off the slipmat.
When the gang are in the pub and Jip realizes he fancies Lulu, he looks over and she lights her cigarette and has a puff. But then it switches to a wider shot and you can see Lulu lights her cigarette again.
When Jip is driving home from work, his right foot - his accelerator foot - is tapping along to the music yet the car still drives smoothly.