Continuity: When Arwen is carrying Frodo to the Ford, during the close-up of his face, it is covered in a green slime/pus-type substance (coming out of his eyes and mouth). At the Ford when Arwen confronts the Black Riders, his face is clean. [Peter Jackson has stated that the pus was used in one scene and afterwards they decided it was too gross and didn't use it again. That's why it appears and disappears. Still a mistake though.]

Continuity: During the battle at Amon Hen, Legolas says, "The Horn of Gondor!" Aragorn then rushes past him so close that he has to lean backwards to let him pass. In the next wide shot, Aragorn runs past Legolas again but this time further apart.

Continuity: When the Nazgul confront Arwen across the river, they draw their swords in their left hands. In the next shot this changes to their right.

Continuity: After Lurtz releases his first arrow at Boromir, one of the Hobbit stand-ins is seen to Boromir's left, throwing stones. The next shot is of Merry and Pippin standing close together, looking at Boromir to their left - they have moved position to the other side of him.

Continuity: After Arwen has crossed the Ford of Bruinen and is challenged by the Ringwraith Witch-King, she draws her sword and holds it high and ready to strike. Arwen then calls upon the waters of the river for assistance. When the rush of water with horses' heads comes around the bend and into view there is a clear shot of Arwen's back as she is watching the water come down on the Ringwraiths and she is not holding her sword up. Shortly after all the Ringwraith's are swept away, there is a scene of Arwen's face and upper body and she is still holding the sword high and ready to strike.

Continuity: At the end of the Amon Hen battle scene, where Boromir has been shot by Lurtz, there is a close-up of Lurtz's feet (as if from Boromir's POV) showing Lurtz striding over and stopping in front of him. The ground is clear all around his feet. The shot then changes to a wide shot, from the side, and there are orc corpses piled up all around. None of these were visible before, but should have been.

Revealing: At the end of the film, there is a shot when Aragorn fights an Uruk-hai, just before Aragorn's back is up against the tree (before Legolas shoots six Uruks in a row). Look at the Uruk-hai's left arm, Aragorn rips two big holes with his fingers, in the Uruk-hai's suit.

Continuity: In the Amon Hen battle scene, at the start of the fight with Lurtz, Aragorn is slammed backwards against a tree knocking his sword out of his hand. There is then a shot of Lurtz throwing his shield at Aragorn, and in the following shot, where the shield pins Aragorn against the tree, his sword is still in his hand, only to fly out again on the shield's impact.

Continuity: Aragorn's mouth is badly bloodied when he is headbutted by Lurtz, but the blood disappears almost immediately.

Continuity: As Boromir and Aragorn talk right before Boromir dies, you can see Boromir's right hand gripping Aragorn's left shoulder in the shot from behind Aragorn's right shoulder, but when the camera view changes to Boromir's perspective, looking up at Aragorn, his hand is not there. The scene goes back and forth between these two views several times.

Continuity: Boromir gets shot by Lurtz's second arrow, drops down to his knees in front of Merry and Pippin, gathers strength, turns around and stabs an Uruk. In the next wide shot and close-up, he stands and is about to stab an Uruk in the back and the two arrows in his chest are there. Yet, in the next wide shot, as his blade is going down into the Uruk, Boromir has only the lower arrow in him, the one near his shoulder is NOT there, for 23 frames. In the next close-up, the upper arrow is back. These arrows are NOT CGI.

Continuity: In Boromir's death scene, when Aragorn puts the sword into Boromir's hand, Aragorn's finger with the ring on is covered in blood. When we see his hands on Boromir's chest a second later, the blood has vanished.

Continuity: When Frodo is pulling Sam out of the water at the very end of the movie, the underwater shots show Sam's hand grasping Frodo's wrist (Frodo's palm is against the inside of Sam's wrist), but as soon as he gets him above water, Frodo has a grip on Sam that forces Sam to keep his palm facing away from Frodo's arm (Frodo's palm is against the back of Sam's arm). Short of releasing Sam completely, there is no way to change grip like that in between the two shots.

Other: In the credits, the word "Technical" is spelled "Technicial" in one instance - on the right side, used in the phrase "technicial continuity." In amongst the grip section.

Continuity: At the Council of Elrond, when Gimli says, "I will be dead before I see the ring in the hands of an Elf!" in the close-up shot the two Elves on the sides of Legolas stand up. In the next wide shot the Elf on Legolas' right is just getting up.

Trivia: When the Hobbits enter Bree, right after the wheel of the carriage passes in front of them, there is a man you see to the right who's holding a carrot and burps. That is Peter Jackson making a cameo appearance.

Continuity: At the very start of the film when Gandalf is in his wagon, Frodo stops him with: "You're late." Gandalf stops his wagon quite a way from the bank that Frodo appears on. Gandalf sternly delivers his line and moments later they both burst out laughing. Then Frodo almost steps onto the wagon which was much further from the bank during the first part of the exchange.

Continuity: When Arwen and Aragorn are talking on the bridge, she caresses his cheek and forehead. In the next shot, her hand is no longer on his face.