Continuity: When the Gornickes catch up with the RV, its shadow is cast to its right, but after Cassie tackles Carl to the ground, there's an exterior shot of the RV and bus as they both cast long shadows to their left. This drastic change in shadows continues in following shots.

Continuity: Bob tosses the stink bomb canister through the open door, towards the back of the RV, but the smoke cloud appears in two different areas; it expands at the sink window and at the front passenger window, with clear air seen in between through the door.

Continuity: When Earl gives Cassie the list of places that sell organic health food, in the close-up she holds the papers with her right hand at the top and left hand at the bottom. However, in the next shot it's the opposite way, her right hand is at the bottom and left at the top.

Continuity: When the RV is stuck behind the slow moving tractor, as the RV tries to pass, in some shots there is only a single yellow line and in some there are double lines, it goes back and forth.

Continuity: When Mary Jo begins walking to the RV at 6:00 AM, Bob and Carl remove the tire blocks outside, while Jamie closes the "stupid pop-out thing" inside. In the exterior shot, as it slides in, Bob is sitting with his hand on the steering wheel - though it isn't until two shots later that Bob actually gets back to the driver's seat.

Continuity: After Jamie pinches Carl's ear because he spills their destination, when Mary Jo walks toward the Munros, Billy's back faces the camera as he stands on the ground, away from the bus. However, in the next shot Billy faces the camera as he stands on the stool while leaning on the bus.

Continuity: When the Gornickes get ready to sing for the Munros, Earl gives Billy the red kazoo, which is seen in the front shots, but in the side shots Billy holds nothing.

Continuity: When the thoughtful gentleman offers Cassie the 'vegetarian' organ stew things on the table disappear, reappear and change between shots, such as Earl's plate, the flowers, etc. (More visible on fullscreen DVD.)

Continuity: After Travis hoses the turd off Bob, when Billy remarks that 'Ernest Goes to Jail' is funny, the boy's left front tooth (viewer's right) is fully grown in; however, that evening, after dinner, Billy's tooth is barely halfway grown in.

Continuity: When Bob drives up Diablo Pass and also when the RV teeters on the mountain, in the exterior shots the back curtains are closed, but in the interior shots they are wide open.

Continuity: At the start of the road trip, when Bob tries to maneuver and turn the RV around on their street, the interior shots looking out and the exterior shots do not match up in consecutive shots, regarding the homes and gardens, etc that are seen.

Continuity: When Gary and Larry catch up with Bob, the trees and snow surrounding the two cars differ after the RV destroys the vehicles; also, note the tree tops.

Continuity: At the very end when the Munroe family gets stopped by the police, they walk directly behind the RV. A moment later when the RV rolls down the hill (and runs over the police car) it is facing toward them. For it to do this it would have to run over them.

Revealing: When Bob is riding the pushbike down the steep hill to get to his family and the Gornickes at the bottom, in some shots you can blatantly tell that a stunt double that looks nothing like Robin Williams is riding the bike. The stuntman is also visible later when Bob is on the roof of the Gornickes' bus.

Other: In the scene where Bob is trying to get reception on his pocket PC, he is on a rock and the pocket PC beeps, indicating that there is no signal. But when it goes to a closeup of the pocket PC, you can see in the top left hand corner that the signal is full.

Continuity: Just forward of the right rear wheelwell, a small dent disappears and reappears throughout the movie.

Continuity: When the Munros first hitch a ride with the Gornickes, after Bob takes off on the bicycle, as Cassie questions Earl the calculator repeatedly disappears, then reappears, and the books, etc change between shots.