Factual error: After Charlie and Irene leave the Rhode Island station for New York, the female officer refers to her boss as Captain, when he is a Colonel.

Revealing: When Hank crashes the car through the shop, look at the barber's chair. You can see it's a stunt double for the actor.

Revealing: When Charlie gets shot inside the station a woman (accompanied by a man with a green hat) can't help laughing.

Continuity: In the scene where Irene and Charlie run after the train there are several discontinuities: 1) The warning cross disappears in the shot where the last car passes. 2) In this shot the last car looks much higher than when Irene jumps on. 3) The sun direction changes.

Continuity: When Charlie compliments Irene on not giving a damn about her hair it gets tucked behind her left ear by itself.

Continuity: In the scene where Irene and Hank are driving along in Gerke's car and Irene is holding the dart in her hand there are some inconsistencies: 1) The right window is sometimes open, sometimes closed. 2) When she is threatening Hank with the dart her hair is sometimes hanging over the dart, sometimes not. 3) Her seatbelt is sometimes on top of her collar, sometimes under it.

Continuity: After Charlie tells Irene that he is schizophrenic they hold each other by the hands. When the camera is on him her arms are bent at the elbow, and when the camera is on her her arms are stretched out.

Continuity: In the scene where Charlie lets the woman jump the line his newspaper switches back and forth between his right hand and under his left arm.

Visible crew/equipment: When Charlie talks to the little girl with the rope, the mike and two hands holding it are reflected in the helmet.

Continuity: When Charlie tries to get the little girl off the street there are the same two extras walking by in short succession.

Continuity: Charlie's neighbor Ed allows his dog to crap on Charlie's lawn. In wide shots he is holding the leash roll in his right, in close-up in his left hand.

Continuity: In the scene where Dickie is in Hank's & Irene's train cabin, Irene hits him over the head and he lands on top of Hank. You can see his head is behind Hanks shoulder, but when Hank wakes up Dicky's head is next to Hanks.

Factual error: After Jim Carrey has his first "episode", the police car pulls up to the officer in charge, and it has blue lights on both sides. In Rhode Island, all police cars must have red lights only.

Continuity: In the beginning of the movie, when Charlie and Shonté start arguing, Shonté takes his jacket off and throws it to one side. The jacket continually changes sides throughout the scene.

Continuity: When Charlie/Hank and Irene arrive at the train station in Rhode Island.  Charlie and Hank are having a "fight", during this fight Hank unzips his pants to wiggle his "thing" at a group of ladies sitting on a bench.  Immediately after that he falls to the ground and his pants are zipped.

Continuity: Just notice that in the clip at the very, very end of the movie, when Whitey says he thinks he's found the missing thumb, he ducks under without the hose in his mouth. But in the water, it's in. Then when he comes back out, it's out again!

Continuity: After Hank has conned Irene into sleeping with him, the morning after Irene finds the "Coke" machine smashed up. In a later scene the Coke machine is back in perfect condition.

Continuity: This happens a lot in the movie but specifically... When Charlie is shooting the cow, the wide shots with the bike are really sunny, but in the close ups (fingers in the nose) it is overcast or studio lighting.

Continuity: In the scene where Charlie is being chased through the train station and gets shot in the arm look out for a boy in the train station with a green top because immediately after he exits the station the boy is sitting on a bench outside.

Visible crew/equipment: When Charlie starts beating the mirror on the train you can see the boom mic on the right of the reflection.