Corrected entry: When Sayid and Sawyer are fighting, Jack grabs Sawyer around the arms and begins to pull him away. The camera cuts to a shot of Sayid and Michael, then back to Sawyer and Jack, and Jack grabs Sawyer's left arm a second time.
Corrected entry: Polar bears have muscles so dense, that if you were to unload an entire handgun clip into him, you'd only piss it off even further. If he was shot in the head he'd go down but the head has no sign of any blood or injuries of any sort.
Correction: It's not known for a fact that it was a polar bear. Also, the island is full of mysteries. It being gunned down by one bullet could be One of Them.
Correction: Sawyer could have broken free in the time between the cut, so Jack grabs him again.