Man of Science, Man of Faith - S2-E1
Continuity mistake: At the start we see Desmond in the hatch. When the explosion goes off he gears up and runs over to a machine where he turns the music off. The shot of the shelf is a flipped shot. (00:02:28)
Man of Science, Man of Faith - S2-E1
Continuity mistake: When Kate climbs onto the ladder of the hatch, she has both feet on the ladder from the top angle. But when the shot changes to below her, she still has 1 foot on the edge of the hatch. (00:24:50)
Man of Science, Man of Faith - S2-E1
Continuity mistake: When Kate drops the torch in the hatch, its position keeps changing between shots of it. (00:26:20)
Answer: He was eating a peice of an orange with the skin still on.
XIII