Continuity mistake: When Jack speaks to Michael and Jin, as they build the raft, and then when he walks up the beach and inquires about Sawyer's trouble with his head, the backpack that Jack carries on his back is nylon, black/green with white trim. Yet, when Sawyer asks, "Sensitivity to light, that bad?" the backpack is suddenly transformed into solid black leather, of an entirely different style. Then, in following shots it jumps back and forth. (00:16:40)
Tabula Rasa - S1-E3
Continuity mistake: When Ray's pickup truck swerves off the road, it flips and the tailgate completely breaks off, yet in the following shots the bright red tailgate remains intact. (00:30:45)
Other mistake: The Monster appearing in the pilot and causing the turbine to explode is a mistake (not trivia). This is actually an artefact of poor CGI effects that was left in the show in error. It was confirmed by the producers. You can see it best here: http://www.lostpedia.com/wiki/Image:Turbine_Explosion.gif.
Exodus (1) - S1-E23
Visible crew/equipment: As the raft sets sail with Walt, when Vincent runs into the water chasing it, Walt shouts, "Stay Vincent!" At the start of the next shot, on the right, the crew's vessel/equipment is quite visible. (00:40:45)
Continuity mistake: When Jack drops to his knees, after removing the undershirt, one white shirt lies stretched out horizontally on the ground directly in front of him, with both knees centered in front of it; the other shirt is off to his right (viewer's left), with the undershirt he drops. Three shots later, still on his knees, all three shirts lie rumpled to his right; eleven shots later, the single white shirt once again lies horizontally directly in front of him, in the very same position as the earlier shot.
Tabula Rasa - S1-E3
Continuity mistake: When Kate leans over the unconscious marshal he wakes and chokes her, and when Jack subdues him the marshal's large head bandage falls off. When Jack squeezes water into the marshal's mouth, the bandages are wrapped perfectly round his head, yet when Kate stands up the bandages are off again. (00:19:30)
Continuity mistake: When Shannon is looking for Boone but instead finds his "jungle pal" Locke, he is gutting his dinner and gets blood on his face. The blood on Locke's face repeatedly changes, such as in one shot there's a small clot of blood beside his eye, and in another shot the blood is lower and larger. (00:19:00)
White Rabbit - S1-E5
Continuity mistake: When Charlie and Hurley are talking to Jack about the water, Jack then shouts something like, "I'm not making any decision," and in the background two people walk by - they move from right to left. After a cut to Charlie and Hurley when Hurley asks "Why?" it cuts back to Jack, and the same two people walk from right to left again. (00:10:30)
Exodus (2) - S1-E24
Visible crew/equipment: After Sawyer is rescued and pulled onto the raft, scenery or a crew boat is visible in the top right hand corner as Michael stands up. (00:34:30)
Tabula Rasa - S1-E3
Continuity mistake: After Locke whispers to Michael, "I thought you should be the one to bring his dog back to him," when Locke points in the wide shot, Walt, who is sleeping on his stomach, has his head facing away from Michael. But when Michael says, "Hey thanks," Walt's head faces the opposite way towards Michael, and in the next shot he faces away again. (00:38:05)
White Rabbit - S1-E5
Continuity mistake: When Sawyer asks of Boone, "So how does it feel?" Boone sits with his knees up and his arms crossed over his knees, but in Boone's close-up he sits normally with legs down, arms uncrossed. Then, as Sawyer walks away Boone sits just as in the first shot. (00:40:15)
House of the Rising Sun - S1-E6
Revealing mistake: When Jack and Kate run from the bees, they enter the cave, and when they remove their tee shirts Jack's back and sides are perfectly visible. There is not even the slightest hint of any kind of scar, on the left side of Jack's back, from the nasty cut that Kate recently sewed up with the black thread. (00:12:40)
House of the Rising Sun - S1-E6
Continuity mistake: The gold watch disappears from Michael's wrist in the wide shots, when Jin is attacking and trying to kill him, but reappears in the close-ups during the attack. (00:05:20)
Tabula Rasa - S1-E3
Continuity mistake: When Sun brings the luggage to Jin her face is mildly dirty. After Jin says, "Go wash up," in the next shot facing Jin, Sun's entire face is filthy, yet when she turns it's just a bit dirty again. (00:15:25)
Continuity mistake: When Hurley is showing Charlie how to fish with a spear while standing in the water, the wet area on Hurley's tee shirt drastically changes between shots, such as going from being soaked up to his collar, but in the next shot dry till his waist.
All the Best Cowboys Have Daddy Issues - S1-E11
Continuity mistake: When Ethan places his foot on Jack's chest, Jack has some leaves on his face that change position between the shots. (00:28:10)
Tabula Rasa - S1-E3
Continuity mistake: As Kate rescues Ray from the burning pickup, his hat falls onto the grass beside the cab door, yet in the next shot the hat is at least eight feet away, behind them. (00:30:50)
Visible crew/equipment: When Sawyer finds his blue tarp that the boar ran off with earlier, Sawyer hears the whispers, then the boar reappears and chases him. When the mean old boar flips Sawyer over, the chain link fence (used for the stunt) is clearly visible beyond the grass, at the top right corner of the screen. (Also seen on Disc 7.) (00:12:10)
Answer: He was eating a peice of an orange with the skin still on.
XIII