Continuity mistake: When Bill Crouse is in his home, near the end of the episode, he pours himself a glass of whiskey. He looks out of the window and see Jen's 'ghost', then screams and falls to the floor. As he's crawling backwards, he's no longer holding the glass of whiskey - and you don't hear it drop or smash.
Continuity mistake: When Roy and Moss are in the basement talking about the night before, just before Jen comes in and we hear her laughing, Roy has the wooden stick from his coffee hanging out of the corner of his mouth. In the next instant shot showing the side of his face, as Jen walks through the door, it has gone.
Continuity mistake: The security guard (the guy Jen fancies) is sitting on the couch reading a big thick book. The first two shots show him holding the book from underneath, a few pages in. The next shot, his hands have changed position and he has instantly read through to almost the end of the book.
Continuity mistake: Near the beginning of the episode, Roy is eating & drinking while the phone is ringing. Eventually he picks it up, then Moss comes in and throws him a muffin. Just before Moss walks in, Roy's coffee cup is on his right on the desk. The next shot, as he catches the muffin, the cup has instantly moved to his left. Afterwards, the cup is back on his right.
Continuity mistake: Near the end of the episode, Roy is helping Jen push her shoes on. While he's pushing one shoe on, you can see Jen has her shoe on her left foot. Two shots later, she is completely barefoot and the shoes are nowhere in sight. After Denholm uses the stress machine on her in her office, she walks out with both her shoes on.
Continuity mistake: During the party down in the basement, after Moss has told the embarrassing Amsterdam story, Roy comes back in the room and realises nobody's laughing. He walks up to Moss and says, "What story did you think I meant?" Roy has a beer in his left hand. The next shot, within seconds, he's shaking Moss by the shoulders with both hands. There was no time frame for him to have put the cup of beer down.
Continuity mistake: Bill Crouse is sitting at a desk talking to his colleague about Jen. The first two shots show him sitting back on the chair with his legs up on the desk. The next shot, he has instantly moved to sitting normally with his legs down and leaning forward.