Continuity mistake: After falling from Sam's shoulders, Gollum attacks Frodo while they roll around on the ground and Frodo's shirt is messy and untucked. However, while Gollum holds his head from the bruise of Sam's rock, in the side shot Frodo lies on the ground coughing and Frodo's shirt is neatly tucked into his pants. (02:37:50)Super Grover
Deliberate mistake: When Bilbo is boarding the boat at the Grey Havens, in the wide shot, the body doubles are standing at the dock. This is most noticeable on the leftmost of the hobbits, who is standing with his face staring straight ahead, unlike the others who are following Bilbo going up the ladder.
Deliberate mistake: Midst the Rohirrim battle with the Orcs, Théoden shouts, "Make safe this city." Two shots later, in the flipped close-up of Théoden as he hears the Haradrim on Mûmakil, his helmet's chinstrap buckle is on his left (viewer's right), whereas it is normally on his right. (00:31:30)Super Grover
Continuity mistake: When Skully, the Orc lieutenant, shouts, "Come on, you sea rats. Get off your ships," the Corsair ship docks and the six mooring pilings are on top of the raised edge of the dock. However, in the following shots all the pilings are located on the ground beside the raised edge. (00:39:30)Super Grover
Continuity mistake: At Edoras, Gandalf and Pippin ride out on Shadowfax, as Merry runs up to the watchtower, followed by Aragorn, to watch them leave. The actual wood of the fence (height, direction of slant and amount in set) differs significantly (especially to Merry's left) in the shot facing Merry's back, as Aragorn reaches him, and the wide shots facing them. (Extended Edition) (00:36:15)Super Grover
Continuity mistake: During the ride of Rohan, there are a number of close-up shots showing characters as well as wide shots showing the whole army. In the close-up shots, the horses you see are brown, black or white, however, the wide shots are different. They show all brown or black horses, with the exception of Theoden's one white horse.
Revealing mistake: While on the balcony at Minas Tirith, Pippin asks, "Is there any hope, Gandalf, for Frodo and Sam?" and in the next back shot of Gandalf standing beside Pippin, the Mordor 'storm' brews in the CG distance. The dome of a building is directly in front of them, to the right. When the beacon of Minas Morgul rises to the sky, there is another back shot of Gandalf and Pippin. In this shot that building with the dome is gone, though it should be visible! (This has nothing to do with camera angles. Extended Edition.) (00:53:40 - 00:57:25)Super Grover
Continuity mistake: When Aragorn, Legolas and Gimli arrive, the Corsair ship has significant differences between the close-ups and wideshots. For instance, in Aragorn's close-up as he leaps over the ship's rail, there is a wide link chain running across the top of the rail that is gone in the wideshots. (00:39:35)Super Grover
Revealing mistake: In this shot at Minas Tirith, Gandalf says, "Peregrin Took, my lad, there is a task now to be done," as they walk out from under the archway and pass a particular tall white stone building, on their immediate right, as they continue to walk on. After Gandalf says, "You must not fail me," Pippin runs toward a building and as the camera pans up the very distinct markings on the large stones are identical to the markings on the stone building in the previous shot. Obviously it's the same building used in both shots of different areas. This type of thing occurs numerous times in the film. (01:00:15)Super Grover
Revealing mistake: Faramir and his men retreat towards Minas Tirith, someone shouts, "Take cover, my lord! It's coming!" In this shot Faramir starts to duck from the Nazgul overhead and seen to his left are his men. After Gandalf rides towards them and a Nazgul lifts a horse and its rider, Faramir is ducking again with the same men to his left in the same positions as the earlier shot. Obviously this is the same sequence that was edited to include shots in between. (00:53:55)Super Grover
Continuity mistake: At Minas Tirith, while speaking with Gandalf, Pippin examines the Gondorian sword as the rest of his garments lie in front of him on the bed. The first shot faces him as does the third shot, but the middle shot is over his shoulder. The gloves' position differs in that middle shot. (00:37:15)Super Grover
Continuity mistake: At Orthanc before Gandalf and company confront Saruman, Treebeard is standing right in front of them and some Ents are in the background, but in the subsequent shots of the group on the ground and from above Orthanc, Treebeard and the other Ents are no where to be seen. After Saruman dies and Pippin finds the Palantir, Treebeard is back again. (Extended Edition) (00:11:00 - 00:14:20)
Revealing mistake: When the Orcs attack Osgiliath, Faramir takes his sword and it appears as if he plunges it into the belly of an Orc. However, he really turns the sword before it hits the Orc and the tip coming out of the back of the Orc is CG. The angle of his hand on the hilt as the blade penetrates and the CG blade in the Orc's back do not line up. (00:46:20)Super Grover
Continuity mistake: At Rivendell, in the first shot Arwen holds the book and it's open to the page with the drawing of the door on the right side. Then in the next close-up, (before the book falls) she is still holding the book open, but it is now open to a different page. Then the book starts to fall to the floor. (00:30:15)
Continuity mistake: As Frodo, Sam and Gollum begin to climb the stairs at Cirith Ungol, Sam asks, "Hey, what's in this tunnel?" then grabs Gollum and pushes him to the stone wall. In the wideshot, Gollum's back is noticeably up against a different part of the wall, than in the previous and following close-ups. (00:59:35)Super Grover