Corrected entry: Just after Hurley throws away his stash and everyone comes to get the food from the jungle (balloon), you see the faces of the people running. There is one man slightly to the side running to the food. This is Boone. He is already dead in the first season after getting shot. (00:03:05)
Corrected entry: When Ana Lucia kicks Sayid out of the room where they are holding "Henry Gale" she shuts the door behind Sayid. The door is a light brown color wooden door. Later, when Ana Lucia lets Lock in and shuts the door behind him, the inside of the door is metal. (00:13:25 - 00:37:55)
Correction: No the door never changes.
Correction: A few seconds later there is a clearer shot of this person and it is not Boone.