Continuity mistake: Season 3, episode 2, "The Glass Ballerina". When Jin is in the hotel and is about to kill Jae Lee, he holds a pillow to Lee's head and presses his gun against it. At first, the gun is pointing to Lee's cheekbone, but when it cuts to Lee as he is sobbing "I'm sorry. I'm sorry", the gun is much lower, and pointing to his throat. Cut back to Jin, and you can see the gun is once again pointing to Lee's face. There was no time for Jin to move it between shots, and Lee did not move nearly enough to cause this changes. (00:26:50)
Continuity mistake: When Jin gets out of the car and goes into the hotel, there is a sign that says it's the second floor. However when it cuts to him hitting the man in the face, it's now the 15th floor. (00:26:20)
Continuity mistake: When Sayid is talking about moving the boat, Sun's hair is blowing in the wind in one shot but nice and neat in the next. (00:03:00)
Continuity mistake: When Sawyer dumps out the water canteen Juliet tosses him, his hand moves from the top of the base to the bottom, and the angle at which he pours the contents out changes, as well. (00:24:15)
Answer: He was eating a peice of an orange with the skin still on.
XIII