Continuity mistake: When Will and SA5M are in CBGB's and SA5M uses her phone to take a picture of them, Sa5m's head and eyes have already turned toward the camera when the picture is taken. However, when the actual picture is shown, SA5M is looking directly at Will.
Continuity mistake: While Nia Vardalos is talking to Richard Dreyfus, just after offering him the ice cream cone, the stains on her jacket's left lapel are either there, almost totally disappear, or change shape.
Continuity mistake: In a scene where Philip goes is in prison, it shows "08" as the year on one of the prison monitors. This part of the story takes place in 1998. (01:10:27)
Continuity mistake: Tom receives an e-mail from Summer on day (303). At the beginning of the movie we are told that Tom and Summer met on January 8, so day 303 should be November the 6th, but the e-mail says that it was sent on May 7th, which is day 120.
Continuity mistake: In the beginning during the cheerleader show the cheerleader to the right of Jennifer have her left leg stretched right, covering her right knee which is also somewhat turned right, in the next shoot, supposed to be just a change of the point of view, the same cheerleader have her left leg now straight to the left.
Continuity mistake: During the opening credits, Mark Whitacre is writing with his left hand. Later in the film, he's writing with his right. There is no indication that he is ambidextrous, which would properly explain this mistake.
Continuity mistake: Near the end of the film, when Helvetica and Toby are talking, you can see that Helvetica has no braces. They smile and she has braces.
Continuity mistake: During the final scene of the Nativity, when the baby is born, look at the boy to the right of Mary, he is tipping the candle upside down. When the camera changes shots, he has now got the candle in his mouth.
Continuity mistake: When Ronnie takes Brandy out to dinner, when she asks him what his medication pills are, he holds them out for her to read, and as the shot changes from him to her, the position he's holding the pills changes from being held upright, to upside down. (00:30:25)
Continuity mistake: When Marshall is colouring in his drawing of the Cheerleader the part of the skirt on his right is coloured in but when we look at it again he is just about to colour it in.
Continuity mistake: When Mike and Abby are talking over a drink after his interview with Craig Ferguson, Abby's glass keeps getting more full and less full between shots.
Continuity mistake: When Shavoo and Buddy arrive at the storage area, but before they open the cell, they clasp hands. The shot changes, and their hands are now down and no longer clasped.
Continuity mistake: At the first part of the movie when Candy (the prostitute) leaves the courthouse to talk to Derek, her hair moves between shots. Sometimes in front of her shoulder and sometimes behind her shoulder etc.
Continuity mistake: When Maynard is teaching Tony to shoot a gun, Tony fires three shots first. The gun's chamber closes as usual (meaning the gun still has ammo). We see a shot of Maynard, then flick back to Tony and the chamber is now open (meaning the gun is out of ammo). Tony then fires three more shots from an apparently empty magazine before being told to reload. (01:26:40)
Continuity mistake: When Walter steps into the cat poo he gets it right under the middle of the shoe. When he then lifts his foot to take a look it's stuck under the front of the shoe with no sign of poo in the middle. (00:17:30)
Continuity mistake: When Vivian comes out on the porch with a bottle of soda, the level is way under the label. When she goes down the stairs the level is way over the label on the bottle. (00:42:30)
Continuity mistake: When Gigi calls Alex for the first time to get his opinion about a guy "Jarrad", Alex puts her on hold and goes into his office to pick up the call. In the bar the phone line is lit up where it's holding, but the office phone is not lit up at all.
Continuity mistake: When Sugar Bear flies through the air and lands on Truck at the end dance off, Trucks legs bend backwards underneath him. When Sugar Bear gets off of him, he's now flat but his legs are laid straight out instead of bent.
Continuity mistake: Lyn has a patch on his nose and it's loose on one side. In the next scene it's attached tight to his nose again. (01:17:00)
Continuity mistake: After the spittoon cup gets spilled on Samir's shirt, the stain changes and becomes smaller in a later shot.