Continuity mistake: As Leo speaks with Diane (he's on the sofa; she's in a chair) she refills her wine glass until it is nearly full. In the next shot Diane takes the last sip of wine from her glass, and the following shot shows her glass nearly full again. (00:08:45)
Continuity mistake: After Grace cuts up the vegetable and puts it into the salad bowl, she puts the knife down on the board and walks through to the other room, and speaks with Will. When she exits back through, the knife is now positioned differently. (00:09:25 - 00:10:05)
Continuity mistake: After Jack and Karen join Will and Grace at the coffee shop table, and show them Chompers, their new dog, the blue bottle lid on the table keeps moving around between shots. (00:00:45)
Continuity mistake: When Grace answers the door and meets Diane, Diane's long blonde hair alternates from hanging behind or in front of her left shoulder as they talk. (00:02:25)
