Visible crew/equipment: While passing the frat-house bus, in the close-up, as the two girls are about to flash, the reflections of the camera and two crew members moving on the crew's vehicle are visible on the glass window.

Other: Jack drops the two vials into the Tom Collins glass, while in the bathroom. At the hand-off, when he places the drink on the tray, there are no vials in the glass - there is no ice blocking them from view, just a skewer holding a maraschino cherry, a wedge of lemon, and a straw - no vials. Even Jack can't make the two vials invisible.

Continuity: When Jack and Greg are in the motor home near the beginning of the movie, Jack is talking on the intercom mic to his family in the back, then puts it down when he is finished. But, in the following shot that shows Greg talking, you can see Jack's reflection on the window, showing him still talking into the mic.

Visible crew/equipment: After Jack says, "Only the captain gets to make announcements, Greg," in the next shot of Greg the boom mic and pole are nicely visible over Jack's reflection in the window, to Greg's right. There are two other shots of Greg at this angle - one previous and one following, but unfortunately the equipment is not seen.

Continuity: When Greg does damage control in Roz's office by hiding things, the height of the table is about Greg's waist level - also note the wood paneling trim. In the previous shot, as Greg surveys the room, the table is a foot lower, which is also seen in other shots including when Greg enters the room, after the football game, to check on Jack and the table height is level with Greg's thighs. The entire table was deliberately raised in the close-up.

Visible crew/equipment: When Jack and LJ take off in the motorhome, while ignoring everyone's shouts to come back, the crew's blue tent is visible in the reflection on the motorhome's large side, as it turns the corner.

Continuity: When Jack places Jorge's hair in the test tube, he holds Greg's vial, and the name "Greg" is written with the first "G" beside the stopper. However, in the next shot, when he places the vials into the glass, the name is actually written the opposite way, with the last "G" beside the stopper (this is also seen earlier, when Jack inserts Greg's hair). Tape and handwriting differ as well.

Visible crew/equipment: When Officer LeFlore arrests Bernie and Greg, lovely reflections of the reflector screen are seen in the lenses of the officer's sunglasses. There are other moments in the film where the reflector screen is visible in lenses.

Continuity: During the scene when Gaylord's dad has just found out that Pam is pregnant, Bernie enters the room with a bottle of champagne. he crosses to the bed whilst removing the wire top of the cork in preparation of removing the cork. Cut to Gaylord and then back to Bernie and he is removing the wire again.

Visible crew/equipment: When Pam and Greg walk to the RV and open its door, in the next shot just as Moses chases Jinxy, behind Jack, Roz and Dina, the reflection of a hunched over crew member, wearing a red shirt, is visible. Don't confuse his reflection with Bernie's, who is also wearing red.

Audio problem: At the end when Greg and Pam get married, Kevin plays a song on a set of pipes, however, the notes he plays are wrong - when he blows the short pipes, a low note is made, and vice versa. This should be the other way around.

Continuity: When they all first arrive at Roz and Bernie's, Jack brings LJ over in the stroller. As Bernie babbles, "Bazooka, bazooka," and LJ starts crying, the stroller's orange flap (between LJ's legs) is attached to the front harness around the boy's waist. In the previous couple of close-ups of Little Jack, the orange flap hangs down between his legs.

Continuity: When Bernie tackles Jack, the ball drops at his feet, beside Jack. When the camera cuts away, the ball jumps ten feet away from Jack and Bernie moves away from both of them.

Continuity: At the fondue dinner, when Roz says, "Of course not, that's Greg's foreskin," in this shot Dina holds down the album page with her left hand, as she holds the skin over the album. In the next shot facing Jack, Dina drops it and it falls beyond the open page, yet, in the next close-up the piece falls directly on the open page with the photo.

Continuity: When everyone is having fondue in the patio room, Isabelle comes out and kisses Gaylord on the cheek. The lipstick mark she left on his right cheek changes positions and even disappears from shot to shot.

Revealing: In the scene where Greg is leaving a message on his parents answer machine about going to their house in the Byrnes' motor home, you can see that it is just Stiller standing in front of a blue screen, obviously they wanted to add the scene in after shooting had finished.

Continuity: During the fondue dinner, not only do the positions of the fondue skewers change in consecutive shots throughout the meal, in some consecutive shots there are three skewers, then four, then three and so on, resting in the fondue pot, depending on camera angle - not due to people touching them.

Continuity: When Pam and Greg step into the motor coach nothing is on the counter between the sink and stove. However, in the shot facing Dina there are groceries right beside the sink, at the edge of the counter, including a box of Orville Redenbocker's microwave popcorn.

Visible crew/equipment: As they start out on the trip, when they are showing Jack & Greg up front, you can see in the window right behind Greg a reflection of two crew members wearing sunglasses. They stay in frame for about 5 seconds.

Visible crew/equipment: Two shots after Gaylord touches the boob, you can see a boom mike dip into view.