When the crew are in the cockpit at the beginning of the episode, suddenly, the whole shot jolts when they unexpectedly 'change course'. This means that the camera jolts, along with each of the cast. The shot then goes to Holly who says 'Strange. We've changed course'. It then goes back to the whole cockpit shot, and if you watch Craig Charles (Lister), he actually jolts back in his seat sharply as he does when the whole scene jolts, only he's too early - about five seconds later, the whole scene jolts again, when he's actually meant to.