Continuity mistake: When Claire is holding Aaron talking to Locke, she says "I can't believe he is still sleeping" and they show him sleeping. She then asks Locke if he wants to hold him and then hands Aaron to Locke. His eyes are wide open. Then you see Locke obviously holding a doll in the next shot and they are talking about him still being asleep. Locke then hands Aaron to Charlie and the eyes are again wide open and they are still talking about him being asleep.
Continuity mistake: In Episode 2-23 Live Together, Die Alone When Mr Eko runs out of the hatch when John and Desmond are faking a lock down, you see Eko put his club in his belt right in the front of his pants. In the next scene as he passes out of the door the club is gone and then when he runs back to the door as it is closing he is holding it in his hand as he drops it and it falls under the door.
Continuity mistake: In this episode Jack works on an old crippled man to try and perform another "miracle." Remember, this is supposed to be in Jack's past. When he's looking at the x-rays in the beginning, take a look at the dates on them. They're November 16, 2005. In the last episode of season 2, Desmond says that the plane crashed in September 2004.
Continuity mistake: In the scene where Sun surprisingly sees Michael running out from the jungle, Sun turns and faces Michael, who is on her right. In the close-up shot followed Sun is found facing to her left. It then changes back to normal in the next shot.
Continuity mistake: When Jack and Ana-Lucia are talking on the rocks by the beach at the end of the episode, Ana-Lucia's hair is pulled back and is completely off her face. However, in two of her close-ups, there are two small forelocks loose in the wind near her temples, which are not present in any other shots during this scene.
Continuity mistake: Ana-Lucia says that she never saw Nathan during the two hours the plane was in the air, which Cindy the flight-attendant agrees with, saying that she has a photographic memory for passengers. But the plane was actually in the air for eight hours before the crash, as revealed in the pilot, so, not only should Cindy remember him after that long, but they all should be able to tell the difference between two and eight hours.
Continuity mistake: When Eko finds the "priest" on the ground, his white clerical collar is properly on. In "Duex Ex Machina" when Locke causes the skeleton of the Nigerian "priest" to fall from the tree, the collar comes undone, and the clergy shirt is rumpled.
Add timeSuper Grover
Continuity mistake: Just before Michael says "You're going to pull the bullet out with your bare hands?", Sawyer's hair is very wet and pulled back, as if it were in a pony tail. When the camera switches back to Sawyer saying "You got a better idea?" his hair is a lot drier and covering his face. In the next shot, it is pulled back again.
Add timeSam Johnson
Continuity mistake: In S.O.S., Locke is trying to remember the map he saw on the blast door. He ignores the blaring alarm until Jack reminds him, and Locke inputs the code and hits EXECUTE. The camera cuts to a shot of the numbers resetting, and then back to Locke, and he takes his finger off the EXECUTE button a second time.
Continuity mistake: In episode 2-19 SOSWhen Bernard is talking to Rose after she questions him in front of the group about his "sign" when the close ups are on Bernard you can see that it is raining quite heavily in the background, but when it's close up on Rose it is not raining. It doesn't begin to rain in the episode until much later.
Continuity mistake: In the scene where Sawyer collapses from his bullet wound, he collapses onto his knees and then twists so that his good arm is towards the ground. From there, he rolls to his back. Then the camera angle changes so we're looking at Michael and Jin running towards Sawyer from the front. Sawyer is now on his good arm's side.
Continuity mistake: At the end of the scene in the gym of the mental hospital when Hurley and Dave talk, in the background there is a guy sitting on the floor in a yoga-like position. His exact location changes between shots, as you can tell by the ground-lines. First he sits on the red line, next to where the blue and the yellow lines cross, then he sits about 5 feet further to the right, and finally he is back exactly on the same spot as in the beginning.
Continuity mistake: When Libby kisses Hurley at the cliff, there is a strand of Libby's hair which you can see hanging freely over her left cheek when the camera is on Hurley. When the camera is on Libby you see the same strand pinched between their heads. Then as the camera switches back on Hurley the strand hangs freely again. It's not possible that this happened only through the force of wind as their heads are stuck together quite tightly throughout the whole kiss.
Continuity mistake: In the scene where Eko is walking up to the church and the woman tells him if he buys a statue the money will pay for a polio vaccine for the village, he is wearing an earring in his right ear. Once inside the church talking to his brother, his is wearing the earring in his left ear.
Continuity mistake: Penny's letter to Desmond changes as he reads it. The text stays the same, but the handwriting and position of the words on the page change between the two shots where you can see the letter from the front. Also, for the audience the letter is read aloud with Penny's voice. Interesting is the fact that there is one sentence omitted: "Sorry to be so dramatic, but these are dramatic times, are they not?" (You can read this sentence in both "versions" of the letter though).