Revealing: When Fletcher is beating himself up he goes into a stall and squishes his head with a toilet seat. You can see that the white part underneath is made out of foam because it keeps squashing down.

Revealing: In the scene where Fletcher is in jail and talking to his ex-wife and he is yanked off screen by a guard. If you look into the reflection in the window of the door behind him you can see him and the guard bump into the wall off screen.

Continuity: In the scene where Audrey is in the mini-van with Max, she has her seat belt on, then the camera cuts to Max, and when it returns to Audrey with her seat belt off.

Other: When Jim Carrey is attempting to force himself to write the word "red" on his desk, in the shot before the "blue." is revealed, his pen is not even touching the desk and his final pen movement is a curve which doesn't correspond to an exclamation point.

Continuity: When Fletcher takes his son to the office, they step out the lift and a woman in a purple suit is seen walking to the left. In the next shot, the same woman is walking to the right.

Continuity: In the scene where Fletcher is in his office and he's trying to write that the pen isn't blue, he swipes everything from his desk and there's then an overhead shot showing the only thing left on his desk is a small piece of white paper on the right hand side. A few seconds later the piece of paper has disappeared and has instead been replaced by what looks like a drinking straw.

Continuity: The gift changes position from when Gretta holds it to when Fletcher takes it away.

Deliberate "mistake": When Jim Carrey is chasing the plane with the flight of stairs, he is able to catch up to it. The guy who fixed it must of been one hell of a mechanic because most flights of stairs don't go over ten miles per hour, while most planes get up to 50 miles per hour when taxiing.

Plot hole: When Fletcher proves his client was underage at the time of the prenup making it void he also proved she was underage when signing the marriage license. This was previously corrected by stating "An underage person has a certain amount of time to invalidate a contract once the person turns 18 after which it then becomes valid". So fair enough - the marriage then becomes valid as they were married for longer than this period. However under the same law the pre nup would ALSO become valid at such time, making it a valid contract.

Continuity: When Fletcher moves underneath the wing of the plane on his flight of stairs, another plane is seen in front of him. It disappears when the pilot sees the shoe land on the windscreen. There is also no sign of the barrier and luggage area that he crashes into a few seconds later.

Audio problem: When Fletcher gives Max his birthday gift, the shot changes as Fletcher starts to say, "I hope it's not partially digested." When Fletcher's face comes into that shot, you can see that his lips aren't moving.

Continuity: In the scene where Max is being driven to school,you can see that sometimes he has his seatbelt on, sometimes not.

Continuity: Towards the end, Fletcher is on the stretcher talking to Max, and looks at his watch to discover he has been able to lie for half an hour. Max then responds "So you lied?". Fletcher then grabs Max's shoulder with his left hand, saying "No! It was the truth!". As the angle changes he is still speaking, but his left hand is now lying across his chest before he reaches out to grab Max again.

Continuity: When Greta is packing her belongings in a box, she grabs a glass ashtray from behind Fletcher. She puts it in the box, then decides not to pack it and lays it behind the box. When Fletcher says 'Greta, don't leave!' the ashtray is back in its original position.

Continuity: Just before Fletcher steers his flight of stairs under the wing of the plane, there is a shot taken from underneath the wing of the plane and you can tell by looking at the runway markings that the plane is suddenly barely moving, it appears to be moving about 5 miles per hour compared to about 30 miles per hour in previous shots.

Continuity: In the scene where Fletcher is driving the flight of stairs, and trying to catch up with the Tower Air jet, the sky changes from cloudy, to clear, to partly cloudy throughout the scene.

Revealing: During the scene when Jim Carrey pummels himself in the courthouse restroom, the walls shake when he throws himself against them. The restroom walls were some type of marble or granite, and in real life would be very thick and rigid, making it very obvious this was a movie set.

Continuity: In the scene where Jim Carrey is beating himself up in the bathroom, he gets a black eye. Throughout the rest of the movie, it disappears and reappears.

Revealing: In the scene where Fletcher drives out of the parking garage almost causing a car accident, you can tell it's his stunt double, because his stunt double is wearing sunglasses and doesn't look too much like Jim Carrey. Then it shows a back view of Fletcher speeding away and his sunglasses are gone.

Revealing: When Fletcher starts beating himself up, look at the sink he's leaning against. It wobbles pretty good for a ceramic.