Audio problem: When Focker is going back to Chicago the woman who is typing stops moving her hands for a little while the clicking noise is still going.

Continuity: When Greg is on the plane trying to fit his luggage into the overhead compartment, there is clearly someone sitting in the seat in front of him. At the same time, there is a young guy trying to get by. After Greg asks him where the fire is, he decides to take a seat. But he chooses the row right in front of Greg, which in the previous shot was clearly taken already.

Continuity: When Greg is eating dinner with Pam's parents, his amount of sweet potatoes on his plate varies, sometimes there's many on his plate, other times there are less. (Time)

Revealing: At the part where the two are racing back to the house. At the very last light when the father turns left, you can see that the driver of the Mercedes is a stunt double.

Continuity: When Greg goes into Denny's room to get clothes, Denny sneaks back home and the chair is by the window facing backwards, one shot later the chair is facing the other direction.

Continuity: When Ben Stiller is waiting to get on the plane late at night there is no one behind him waiting to get on the plane. Yet when he's on the plane trying to stuff his bag into the overhead compartment there's plenty of people behind him.