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 a solid black leather, of an entirely different style. Then, in following shots it jumps back and forth.
Continuity mistake: When Boone tosses the statue out of the plane, in the close-up the entire statue shatters, and the heroine bags spill out as the head flies off to the side. But in the following shot, Locke picks up a large unbroken piece - the head and torso are intact with some bags still inside, and even that piece changes in the next shot.