Revealing mistake: In Boone's flashback in the hotel, you can see the Sydney Opera House out the window which looks nice, except that in order to see the it from that perspective the hotel would need to be EXACTLY where the Harbour Bridge is, but there are no hotels in Sydney that could provide this angle of view.
Continuity mistake: As Jack performs CPR on Charlie, in the close-ups of Charlie, the twine lies curled under Charlie's head and his right hand rests on his chest, but in all the wideshots the long twine is spread all the way out, under/behind Charlie's head, and his right arm is stretched out to his side.
Continuity mistake: When Jack sees the casket, things lying on it change between shots. When he flips it open the ripped interior lining differs in the following shots, depending on camera angle. Then, as Jack destroys the coffin, the broken wood differs greatly between shots. Such as when the shot faces the coffin the entire top is destroyed, but when facing Jack the side frame remains intact.
Continuity mistake: When Jack and Ana-Lucia are talking on the rocks by the beach at the end of the episode, Ana-Lucia's hair is pulled back and is completely off her face. However, in two of her close-ups, there are two small forelocks loose in the wind near her temples, which are not present in any other shots during this scene.
Continuity mistake: In episode 10 Sayid shoots young Ben Linus in the chest, upper left part, just above his heart. It can be seen where the bullet enters the body. In episode 11 when Jin finds the boy and roll him over, the wound and blood is on the right side while the left is clean.
Continuity mistake: Season 5, episode 2 "The Lie": When Jack is walking into the medicine cupboard, he has a few small sweat stains on the back of his shirt. The camera cuts to show him turning to a different shelf, and for a split second you can see that his shirt back is now covered in a huge stain, and with large sweat rings under his arms. After he has injected Sayid, his shirt is completely dry again.
Continuity mistake: At the motel, when Kate asks for the envelope addressed to Joan Hart, the employee searches through the box with many envelopes sticking out of the box. However, in the next shot, as he finds it no other envelopes are visible, and when he hands it to her, her sunglasses are now upside down.
Add timeSuper Grover
Revealing mistake: When Jack and Kate run from the bees, they enter the cave, and when they remove their tee shirts Jack's back and sides are perfectly visible. There is not even the slightest hint of any kind of scar, on the left side of Jack's back, from the nasty cut that Kate recently sewed up with the black thread.
Continuity mistake: When Sayid stabs Sawyer, in the close-up there are considerable blood stains on Sayid's white shirt, yet when Jack pushes Sayid off Sawyer all the blood has vanished. This continues to happen in all the following shots, when Jack tells Sayid to get his bag, and the amount and pattern of blood also significantly changes.
Revealing mistake: As several camera angles show, Sawyer's makeshift stretcher was made by drilling multiple holes in the upper frame struts, through which was threaded rope made from dried roots or vines. The cast who supposedly constructed it were not carrying power drills among their primitive implements.