Corrected entry: In Balin's tomb, when the Fellowship can hear the Orcs coming, they block the door and prepare for battle. The thing is, there is a HUGE hole in the wall behind them (they even leave through this after the fight is over to get to the bridge). Why didn't they run through there after blocking the door in the first place? I realise that we wouldn't have a great battle scene, but it still would have saved a lot of hassle.
Corrected entry: At Bilbo's birthday party, he is wearing a red jacket with a green collar. He then disappears. When he re-appears, he still has it on. When he grabs the walking stick, it has turned all green.
Corrected entry: After the fellowship passed the statues of Argonath, the river ends by a huge waterfall. There's a huge rock on the very tip of the waterfall, yet the reflection is not visible on the water; compare it with the Argonath statues which have its reflections on the water.
Corrected entry: The doorknob to Bilbo's Hobbit hole is in the center, as mentioned in the books. However, the interior doorknob is at the side of the door, in the normal place.
Corrected entry: When Sam tried to follow Frodo (at the very end) and started drowning in the Great River, Sam was all the way under water. Frodo saved him, and then when you see that they are both in the boat again, Sam is COMPLETELY dry. Only his head is dripping wet. Frodo also reached in to save him, and Frodo's arm wasn't wet, either.