Other mistake: It's been stated that Danny doesn't know how to read. This is evidenced by the fact that Walter has to read every card that Danny gets. When Danny first finds the game, he's able to read and even pronounce Zathura accurately even though he is illiterate.
Continuity mistake: In the final dinner meeting of the Merchants of Death (MOD Squad),the gun lobbyist gets a piece of pie with cheese on it, takes a small bite; then the alcohol lobbyist attacks it with her fork for a bite, pulling all the cheese off and toppling the little American flag in it. In the next shot of Bobby eating, and a closeup of the dessert, all the cheese is back on it and the flag is upright again.
Visible crew/equipment: In the scene where the piano collapses, after Madea's chainsaw rampage, you can see the wire that pulls the piano apart.
Continuity mistake: In the boat chase scene with Dirk, Al and Rudi, the glass at the front of the boat gets shot out and then appears intact in the next scene, but is shot into pieces seconds later.
Continuity mistake: In the fight between Barkis and Victor in the church, Victor slashes at Barkis with the fork and leaves 3 very noticable tears in Barkis' jacket. These tears aren't seen in any of the subsequent shots. (01:09:15)
Other mistake: When Sarah is at her Aunt Mitzi's house looking at the yearbook picture of Beau Burroughs, Beau's name appears on the top of the list, yet his picture is farthest to the right in a row of pictures. Yearbooks list names with the top name being on the left, and the last name on the right.
Continuity mistake: In the scene where Chicken Little lends the alien baby, Kirby, his handkerchief, after Kirby blows his nose, it sticks to Chicken Little's hand. Chicken Little then wipes the hanky off his hand on to the grass. In the very next shot, the hanky has disappeared, and never shows up again.
Visible crew/equipment: As Bo and Luke are surrounded by cops, Luke says "I never get tired of hearing him say that." As the camera pans around the front of the General Lee the camera is visible reflected on the front windshield.
Revealing mistake: When Tom joins Sarah and Eliot for the kneeboarding, after Sarah apologizes for Tom's interrogation Eliot says, "It's okay, my dad would've done the same thing." Two shots later, as Tom grunts in the water, this shot is flipped - the driver is now on the left and the kids switched sides.
Continuity mistake: Following Rodney's step from the escalator on the red pedestal he is being scooped into one half of a wire-frame globe/ball. Two halves now (the other one has Fender in it) form an intact globe. A safety bar with a 'wooden' middle bit (like those on rollercoasters) suddenly appears. After their journey, when the ball splits back into two halves, the safety bar, which previously had mysteriously appeared, now has disappeared.
Continuity mistake: When Dean returns to the drink station after being given a business card, he crumples it and drops it on the floor to reveal that it's for a steakhouse. But it cuts to a front-shot of him speaking to Monty, he still has the crumpled card in his hand.
Continuity mistake: When Arthur breaks the arm of the chair as his brain is being taken, the arm is strapped to his wrist. A second later the strap and broken arm are gone.
Audio problem: In the scene where Todd and Jeremy are in the bedroom together and Todd is lying on top of Jeremy asking to play "tummysticks", - right before Sen Clary is about to come in and Jeremy begins to panic, watch Jeremy as he's lying on the bed talking. You hear him say about three sentences, but see his mouth move for about one from the left side view of his mouth.
Continuity mistake: When Alec Baldwin writes the check, the date is different when he hands it to Jim Carrey.
Visible crew/equipment: When Jimmy Fallon and Drew Barrymore are taking their seats after the guy yells peanuts and crackerjacks, if you look carefully you can see some of the seats behind are actually filled with mannequins dressed with clothing. Some of them don't even have arms. (00:38:00 - 00:41:00)
Continuity mistake: When David goes to see his friend for coffee, watch J.J.'s coffee mug. From behind, the handle is on his left. From the front, it's on his right. (00:15:10)
Revealing mistake: Whenever June is supposed to be playing the harmonica, the viewer can tell she is actually not playing it but just putting it up to her mouth. Her cheeks never are pushed out or sucked in by the air she is supposedly using to play the instrument. Also at the very end when she is playing the guitar it doesn't seem that her hand movements match the music that is heard.
Other mistake: In the championship game, the Yankees batter hits a foul ball when they score their winning runs.
Factual error: The frozen treats used at certain points in this movie are labeled with nutrition labels found in the U.S. today. The labels looked extremely different in the 70's.
Continuity mistake: When Charlie looks across the street and notices Viola and Ruby sitting for lunch and that Dr. Chamberlain is in fact a waiter, in the first shot Chamberlain hands Viola and Ruby a menu each. In the next shot he's holding them again. (01:02:35)