Continuity: When John Farley is about to be interviewed by Tyra, they cover up his face wounds with makeup. Then he talks to his mom, in the same room, and they are uncovered. He goes back to sit down and one is covered with makeup again. Then he leaves, and they're both uncovered.
Continuity: When Farley and Mr. Woodcock are in the barber shop, the barber uses the clippers to make a huge, very noticeable bald spot in the back of Farley's hair. When he's getting out of the van at Mr. Woodcock's ex-wife's house, there's no bald spot. Then as he's walking to the door, the bald spot is back.
Continuity: In the pizza restaurant, in one scene John hits the bowl of food and it's all over the counter, in the next scene, all the food has been cleaned up and is neatly back in the bowl. Not enough time had elapsed for the contents to have been cleaned then placed back into the bowl.
Continuity: In the bar scene with John and his Agent, she checks her Treo for a message about the Corn Cob Key and then puts it down on the bar. The next shot John has it and he puts it down too. During the rest of the scene, using the same two or three angles, the phone's position changes back and forth.
Errors in geography: When John arrives home at the airport in Nebraska, there are palm trees in the background.
Continuity: After Farley finds out about his mother's engagement, he storms into the Toby's pizza restaurant and while "venting" he grabs a slice of pizza, disturbing the entire pizza. However, the next time you see the pizza, it is back in its original undisturbed position.
Continuity: In the pizza shop after John is jogging he is talking to Nedderman his shirt is covered in sweat, but in the next shot it is not, and then in the next shot the sweat is back, then the sweat is bigger and then it gets smaller.
Errors made by characters (possibly deliberate errors by the filmmakers): Farley's agent calls him from a plane using a cell phone. It seems that the plane is in the air during this scene. Talking on a cell phone would be not be allowed during a flight.
Audio/visual unsynchronized: At the Italian restaurant, when Woodcock is trying to remember Farley, he says "It's coming back to me" but his lips aren't moving.
Continuity: When Farley and Nedderman are about to break into Mr. Woodcock's house to plant the video camera, we see several shots of them moving through the yard and into the house, and neither one is carrying the camera.
Revealing mistakes: When Farley is a kid, he has blue eyes. When he is an adult, his eyes are brown.
Continuity: When John is at his Mom's house just before Mr. Woodcock arrives the first time his tie is dimpled and wrinkled. After Mr. Woodcock walks through the door, his tie is smooth and undimpled.
Continuity: When Farley reunites with Nedderman at Toby's, Farley's Journey shirt goes from sweaty to not-sweaty to very sweaty.
Revealing mistakes: When John Slips off the treadmill, he smashes into the weightlifters yet when that happens, If you look carefully a few of them bend where John is.