Plot hole: The fake Jinx wouldn't be able to get into the den, the door was closed.

Continuity: In the 'race scene' near the end of the film, just before Greg and Jack go their separate ways, you see Larry (who is sitting next to Greg) say, 'Oh, look, there's Jack. Hey, Jackie,' and he waves. Then it cuts to Jack, who is looking at Greg, and then it goes back to Greg, and in the background you see Larry and he is unfolding a newspaper and starts reading it. Then it goes back to Jack, and then back to Greg, where you see Larry with his hands on the dashboard, looking at Jack. So what was with the newspaper? Where did it come from? How did it disappear so quickly?

Continuity: During the scene when everyone is gathered around discussing the whereabouts of Mr. Jinx, Jack announces "We'll just have to reschedule..." Debbie jumps up from the couch and when she does she hits the coffee table causing one of the edges of the table to fall and hit Denny's knee. The next shot the edge is back in place off Denny's knee and Denny has slightly changed positions.

Audio problem: When Jack is talking to Greg inside the changing room, Jack is saying, "I'll be watching you", but his mouth is still moving saying something else.

Continuity: When Pam is ringing Greg near the end, Jack is watching from the side, and it is obvious how much longer his hair is compared to the rest of the movie. His hair is quite short in the rest of the movie. So it is obvious (since he looks younger in that scene) that that scene had been shot near the start of the filming.

Continuity: When Jack says, "You spray painted his tail to make him look like Jinxy didn't you?" Look closely at Bob behind him, his mouth is closed but in the next shot of Jack holding Jinxy, Bob's mouth is open.

Audio problem: When Jack talks about Kevin's ring, Pam stops drinking and coughs slightly but her mouth doesn't move.

Other: Near the end of the movie, Greg says he's in row 8 on the plane. But when he's on the plane, we see there are only about 7 or 8 rows behind him. If the plane had only 15, 16 rows, the plane wouldn't have that middle section of seats.

Continuity: When Greg is trying to open the suitcase, the top pouch is empty, when the delivery man drops it off, and when Jack tries to open it, the top pouch is full.

Continuity: When the characters are standing in the den after the cat has ruined everything, there are plates all over the floor. There is a "T-shaped" pile of plates around De Niro's right foot that almost rotates between cuts.

Continuity: Before the fire scene, the rain gutter is on fire in several places. But when the rain gutter gets disconnected, the fire in the rest of the rain gutter mysteriously disappears.

Continuity: At the dinner table (the urn scene) after Robert De Niro reads his poem he puts it in his wallet and closes his wallet, then in the next scene in the bottom left you see him close his wallet again.

Continuity: During the race scene, when Greg gets going again after stopping for the first red light, Jacks car shoots past him. They then race towards the next red light, but when Greg stops, Jack pulls up from behind, as if he had never driven past them.

Other: When Jack shows up at the airport to rescue Greg the camera's view of him is from behind a pane of glass. Watch the reflection carefully and you'll see the extra who exits the door Jack is entering just stand there and wait for him to reach it.

Continuity: Near the end of the film Greg is talking to Pam. She is laying on the bed and he is sitting on the bed . The scene moves back and forth from him to her and every time the pendant on her necklace moves from side to side.

Continuity: In the beginning of the film, when De Niro is holding the cat explaining to Pam and Greg how he taught the cat to use the bathroom, the cat changes from shot to shot. In some shots it's a very fluffy Himalayan with a lot of black on its head, then the next shot it's a much less fluffy cat with more gray on its head. The positioning of the cat in De Niro's arms also changes from shot to shot in this scene.

Continuity: When Greg borrows Jack's P.J.'s, sometimes there are initials on them others there aren't.

Continuity: At the dinner table when Greg is trying to open the champagne, Pam look straight ahead startled for a second, then in the next frame she is talking to her dad again.  It looks like she is seeing the urn hit before it is in the film.

Continuity: When Robert De Niro's character is showing off the surveillance equipment inside the bear and in the room, he turns the TV on and it stays on. Later when the scene is about completed, the TV is on in one frame, and then with no-one motioning to turn it off, or having their hands near it, the TV turns off by itself. One shot it's on, the next it's not.

Continuity: In the scene where Greg is on the roof listening to Jack talk on the phone in Thai, Jack is wearing a plaid shirt and tan jacket. When the phone call is over, the scene shows the back of Jack entering the house, and he is wearing just a plaid shirt, no jacket.