Trivia: In Cloud City, when Chewy finds C-3PO in pieces in what looks like a droid scrap room, you can see what looks like the upper half of IG-88 leaning up against the wall. It is revealed later in books to be the IG-88 unit that went in search of Han, but was intercepted and destroyed by Bobba Fett.
Visible crew/equipment: When Luke and Vader are fighting in the carbon-freezing room, in the wideshot after Luke does a somersault, a crew member is visible in the steam on the right side of Vader, moving out of the way. (01:40:50)
Suggested correction: It's Luke, not a crew member.
Continuity mistake: In the last part of the lightsaber duel, and in the following scenes, the color and seriousness of the wounds and bruises on Luke's face keep changing: For example, in the iconic segment where Luke reacts in shock and horror at Vader revealing himself to be his father, the injuries look quite nasty, but when he comes to a stop inside the tunnel after falling from the catwalk, they look far less severe. (01:49:30)
Continuity mistake: When Luke climbs into his snowspeeder, his hair is shorter than when he said goodbye to Han and Chewbacca while on his way to the speeder. When he takes off his pilot helmet on Dagobah, his hair is back to normal. (00:22:20 - 00:25:40)
Continuity mistake: During the duel in Cloud City, Darth Vader cuts three pillars with his light saber, just before cutting Luke's hand. The pillars aren't burning after that yet in the following shot, they are burned. (01:45:55)
Continuity mistake: Widescreen version: Darth Vader and Admiral Piett are talking on board the Star Destroyer at the end of the movie. In the first shot, a man is standing behind Piett. In the next shot of Vader and Piett, a different man is standing behind Piett. Then, in the third shot of Vader and Piett, the first man is back. The design of the wall and window also differs. (01:57:05)
Continuity mistake: When Luke is hanging upside down in the monster's cave he uses the Force to get his lightsaber. In the shot from Luke's POV it's about 3/4 buried in snow, but in the reverse it's only about 1/4 buried.
Visible crew/equipment: While in hot-pursuit, Han and Chewie are desperately trying to fix the Millennium Falcon (just after C-3PO informs them of the damaged hyperdrive, making light-speed impossible). In one shot Chewbacca has a bare human thumb, without gloves or makeup, and can be easily spotted in the lower left part of the screen. (00:38:00)
Continuity mistake: When Luke crashes on the snow he tries to open the cockpit pushing the canopy. A shot later he is pushing the windshield. This changes back and forth several times.
Continuity mistake: After Luke's snowspeeder crashes on the snow, right before he exits, there's no damage on the right window. From the outside shot it's broken all over.
Continuity mistake: When the Falcon is being pursued by the Star Destroyers after escaping Hoth, C-3PO enters the cockpit, attempting to talk with Han, but the ship shakes and he lands on Chewie. After Han says to check the deflector shields, Chewie pushes C-3PO off him, though C-3PO leaves his hand on Chewie's shoulder. In the next shot, C-3PO is suddenly standing at the other end of the cockpit, with his hand nowhere near Chewie. (00:37:10)
