Stupid Holiday Charity Talent Show - S4-E8
Continuity mistake: While they are talking about the talent show at the beginning of the episode the coffee mug on the table changes position.
Continuity mistake: When everyone is at the conference table and Bill is telling them that he is going to have a baby he is holding a cup, after the opening credits, continuing the scene immediately, the cup is on the table.
Continuity mistake: When Dave's friends are at the conference table and Joe comes to talk to them, the door to Lisa's office is open. The next shot inside Lisa's office, the door is closed.
Who's the Boss: Part 2 - S4-E13
Continuity mistake: After Lisa puts out the fire, a sandwich keeps appearing and disappearing from the plate.
Beep, Beep - S4-E16
Continuity mistake: At the end of the scene between Bill, Lisa, and Dave when Lisa is yelling at Bill about lying that they had sex, the person in the booth is seen taking off her headphones twice.
Continuity mistake: When Bill is in Dave's office trying to be funny the coffee mug on Dave's desk changes position a few times.
Continuity mistake: While Max and Lisa are talking about how he likes Beth the person in the booth changes.
Retirement - S5-E21
Continuity mistake: When everyone is at the conference table at the beginning, there is a bottle near Max that keeps changing position.