Other mistake: When Heather Hills takes a swing at Rodrick with mike stand and hits the chocolate fountain, how does Heather splash chocolate on herself?
Other mistake: Before the nationals, when Beca is getting dressed, we see in the mirror that Kimmy-jin is playing KINECT Sports, but when it pans to her, she is playing with a controller.
Other mistake: In Tiffany's converted garage, Tiffany says she's thinking of putting in a ballet bar, but there's one there already right next to the big mirror, where it's supposed to be.
Other mistake: When the Elysium group turns the car back over, they all start clapping. They have already said they don't clap they rub their fingers together instead. (00:22:15)
Other mistake: When Ralph smashes the giant cake, pink icing splatters the walls, the floor and the other video game characters. There are no pieces of the actual cake anywhere, only the icing.
Other mistake: When J is falling from the Chrysler building, the soles of his CGI shoes are completely black, brand new and spotless, which is impossible unless he got up there flying or changed his shoes in mid-air. (00:36:00)
Other mistake: Big animals are small and small animals are big on the island, but Alexander has fireflies in a jar at his treehouse. If animal sizes are reversed on the island, the fire flies should be very large, similar to the bees that show up later in the movie.
Other mistake: In the scene where Vitaly jumps the flaming hoop again, in the shot before he says to light the hoop on fire, if you look at the dogs you can see that three of them do not look like they do in the rest of the movie. One of them even looks completely different.
Other mistake: In the bar scene they show an online video of Jim and Nadia. The angle of the video is from the movie but the web camera in the computer was situated in the left of the scene, so the position of the online video is not correct. (00:19:02)
Other mistake: How could Argie and Barker get round the skateboard track and up the stairs to the platform, especially with Barker, in less than 5 seconds?
Other mistake: At the end of the movie when all the new dads are hanging out, Davis misses catching his beer and it hits Jordan in the face. All the dads run to the edge of the stairs no longer carrying any of their babies from a few seconds earlier.
Other mistake: To save Sunshine from the general, Dex pulls on a rug to make sure the general falls backwards. However, Sunshine was also sitting on a chair on the same rug, but both her and the chair are unaffected by the rug being pulled. (01:14:05)
Other mistake: When Dallas is stripping he turns around to face the camera and breaks the strap of his g-string. In The next camera position of the same scene, his g-string is fully intact . (01:40:40)
Other mistake: As Jim and Cindy Green and their "son" Timothy enter a hospital room where Uncle Bub lay dying, the clock on the wall shows 7:39. Two minutes later, the clock still shows 7:39.
Other mistake: During the end credits, there's a misspelling. An 's' is missing from 'First Assitant Camera'. (01:33:05)
Other mistake: During her somber trick-or-treat stroll with April, Wren receives a message from Aaron. She is really surprised by that and wonders how did he get her number. On the other hand, the text is identified by his full name, showing that she had his number saved in the phone book. (00:10:50)
Other mistake: When the narrator holds up the wind speed gauge at the water's edge, strong whitecaps should have been visible to match the 22MPH indicated.
Other mistake: In the scene when Lindsey picks up her paycheck, the check is not signed.
Other mistake: The way Sid interacts with the whale's blowhole is illogical in relation with the manner the water is being discharged. When viewing Sid up close, it is seen that the water stream is divided and outspread due to Sid's manner of blocking parts of the blowhole with his body. Despite that, when viewed further away the water stream is intact and traveling straight ahead. Once the water stream is seen doing just that, the following shot shows a boar getting hit by it as if it somehow hadn't already occurred, not only that, but the stream of water that was displayed in that shot was delimited, despite the water discharge never being paused and Sid never changing positions. When Sid starts rotating, delimited streams of water are seen traveling in various directions one at a time, when there should have been multiples at a time according to what is viewed when close to Sid. (01:07:05)
Other mistake: Cam says he ran for fifth grade class president on a platform of getting rid of a dangerous playground slide. Marty later says he voted for him, but that he was in fourth grade at the time, which would have made him ineligible to vote.