Continuity mistake: When Jack and Kate are discussing who should stay with Sawyer and who should go to Shannon's funeral, as the camera goes back and forth between the two the towel on Sawyer's forehead is there, then not, then back again through the whole scene. (00:07:30)
The Greater Good (a.k.a. Sides) - S1-E21
Continuity mistake: At Essam's place, when Sayid walks toward the smoke alarm he places his tall glass mug with tea on the coffee table. When he drops the "bug" into the tea, in the close-up it is a different glass mug - note the style. (00:13:00)
Exodus (2) - S1-E24
Continuity mistake: When Michael sits with Walt at the airport, Michael says, "If you're worried about Vincent," and the newspaper in his hands is folded and held straight up with the blue Oceanic envelope. but when he says, "Dogs fly in the luggage compartment all the time," the way the newspaper is folded and held is different, and there is no blue envelope. (00:30:55)
Man of Science, Man of Faith - S2-E1
Plot hole: Sawyer pulls the bullet out with his bare hands, we are led to believe, through the cut the bullet made. When you are shot, the flesh immediately seals up, meaning you would need a knife or something like that to get it out. Sawyer only had the gun, as he could not have hidden the knife AND the gun. (00:15:25)
Continuity mistake: In episode 2-19 SOS When 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.
House of the Rising Sun - S1-E6
Continuity mistake: The way Sun is holding the puppy change between the shots. (00:15:20)
Other mistake: When the doctor stops Sun on the streets to tell her that Jin is the one who can not have children, at one point the subtitles say "You're husband." The correct spelling would be "Your".
Visible crew/equipment: When Sawyer is tracking the boar, the camera is moving behind Sawyer, and you are able to see the camera's shadow move on the leaves. This happens in the shot before Sawyer gets on his knee checking out the boar tracks. (00:15:25)
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 start of the episode, Sawyer tells Jess he has $140,000. Later, when Sawyer is talking to his boss in the bar while playing pool, his boss says that he had $160,000.
Man of Science, Man of Faith - S2-E1
Continuity mistake: At the start we see Desmond in the hatch. When the explosion goes off he gears up and runs over to a machine where he turns the music off. The shot of the shelf is a flipped shot. (00:02:28)
All the Best Cowboys Have Daddy Issues - S1-E11
Continuity mistake: When Locke is about to leave to go search for Claire and Charlie, Michael stops him to talk. Locke throws the backpack over his right shoulder, but in the next close-up it's swung over his left (not a flipped shot). (00:06:15)
Continuity mistake: Episode 4x11: The man who visit young Locke at his home places a knife on top of a comic book. The position of both objects keeps changing all the time without anyone touching them.
Continuity mistake: When Sawyer is in bed with his girl, he puts his finger on her chin and says "What do you want right now?". When it cuts his hand is gone. (00:01:45)
Homecoming - S1-E15
Continuity mistake: When Jack shows Locke the suitcase full of guns, you can see a stick visible in Locke's right hand. However, when Jack asks if Locke knows how to use a gun, you can see that after the camera has panned around, Locke is now holding the gun with both hands, with the stick nowhere to be seen. (00:27:10)
Tabula Rasa - S1-E3
Continuity mistake: Inside the closet, when Kate is about to turn the lights off, she is reaching out with her left arm to turn it off. When it cuts it's her right arm turning it off. (00:17:25)
Tabula Rasa - S1-E3
Continuity mistake: When Charlie takes the suitcase from Claire, he puts it on the wheel chair. At first the suitcase lies straight on the wheel chair. When it cuts it's askew. (00:14:30)
House of the Rising Sun - S1-E6
Continuity mistake: When Jack is packing water bottles in to the sack and Locke says "I think One of Us should stay and help Charlie salvage the wreckage", you see Jack putting a bottle in to the sack. His hands are now empty, but when it cuts he suddenly has a new bottle in his hand which he puts in to the sack. (00:16:05)
Exodus (2) - S1-E24
Continuity mistake: In 'House of the Rising Sun' (01-06) Charlie tells Locke the man at Sydney Airport made him check his guitar. However, in this episode, we see Charlie squeezing his guitar into a luggage compartment onboard the plane.
Continuity mistake: During Claire's second visit to the psychic, her hair changes position between shots. In one shot, it's hanging loose and in the next, it's tucked behind her right ear. (00:27:10)
