Continuity mistake: After Jin is pulled off Michael, when Sawyer removes the marshal's handcuffs from his pocket there is a very short link chain dangling - about a couple of inches. However, when Jin is cuffed to the wreckage the link chain is considerably longer - about a foot.
Continuity mistake: As Kate and Jack head back to the beach, while Jack explains why they should move to the caves, when Kate lifts the bag and slings it round her shoulder, opposite sides of the bag face out between the first and second shots. Then, in the third shot it hangs from her shoulder very differently.
Add timeSuper Grover
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.