Continuity mistake: When Yogurt is looking at Lone Starr's medallion in the far away shot, his fingers are around the medallion. When it shows the close-up, he's holding it by the top with two fingers. When it goes back to the far away shot, his fingers are around it again.
Other mistake: When Lone Starr drops the statue of Yogurt on Barf's foot, the statue actually lands beside his foot.
Continuity mistake: When Barf and Lone Star are rescuing Dot and the princess for the first time (from the Mercedes), they position their ship over the Mercedes but facing the other way (ie. facing Spaceball 1). However, in the interior shots showing Lone Star in the cockpit, the view is just clear space. Spaceball 1 is a gigantic ship, and they are very close to it (as well as angled slightly up to it), together with Spaceball 1's "mouth" being open which makes the ship even bigger vertically. It should block their entire view, but it's not seen at all.
Continuity mistake: When Lone Starr and Barf are at the diner after returning Princess Vespa to her father's castle, you see a creature burst out of a man's stomach. The creature then puts a hat on its forehead and begins to sing while walking along the countertop. But later, just before the creature exits, the hat is on the middle of its head.
Revealing mistake: When Pizza the Hutt is telling our heroes that they owe him money, watch his mouth. You can see the actor's real mouth appear a couple of times through the whole speech. The actor's chin is covered in the special effect pizza stuff, but you can still see his very human mouth every so often through this segment.
Continuity mistake: In the scene where Dark Helmet and Col. Sanderz turn off the picture, they turn it back on and we see the nurse making out with the doctor. She hurriedly zips up her dress. However in the next shot her dress is unzipped again.
Continuity mistake: When Colonel Sanders and Dark Helmet meet to discuss Vespa's disappearance, Dark Helmet looks into the periscope and sees Lone Star's ship right behind them. But when they show the periscope Dark Helmet is using there is no view from the other side. How can he see from the other side of the periscope with no window there?
Continuity mistake: In the scene where Lone Starr is lifting the Yogurt statue with the Schwartz, when Barf walks in, Lone Starr drops his hand. But in the next shot when the statue falls, Lone Starr is still holding his hand up until the statue actually falls and then he drops his hand again. (00:49:25)
Continuity mistake: When Vespa starts to run from the wedding, Valium isn't holding anything but as she goes by he is holding flowers. I don't think Vespa handed him her flowers as she ran by because the flowers he is holding are much smaller than the ones she had. (00:08:55)
Revealing mistake: During the merchandise segment, Spaceballs the book is actually a Transformers comic book. You have to look closely at it.
Suggested correction: That's part of the gag.
Other mistake: When Dark Helmet kills the crew member, he chops straight down the man's right side, but the slash mark shows a right-to-left downward slice.
Revealing mistake: In one of the shots of Dot in the "Mercedes" near the beginning, the outline of the blue screen is visible around her.
Continuity mistake: After Lone Star and Barf drop the giant hair dryer, they lift up the empty case. In the "Instant video Cassette" of the movie, Lone Star and Barf are lifting the case, but the hair dryer is missing.
Suggested correction: It's not the same scene. Notice that in the scene where they drop it, it's relatively flat where they are walking. In the instant cassette scene, they are walking down a hill.
They were by a hill, but the angle didn't allow the camera to see it.
Revealing mistake: As the ship goes to Ludicrous Speed, Dark Helmet goes horizontal, and as he does, you can make out of the wires pulling on the bottom of his cape.
Visible crew/equipment: In the desert, Helmet asks the guys "combing" the desert if they've found anything. The camera crew is reflected in the helmet of the guy that says "we ain't found shit."
Revealing mistake: When Vespa starts shooting at the guards on the platform, the one on the end flips over when shot, and you can see him bend over after he's shot to prepare himself for the stunt.
Continuity mistake: As the shaving guard falls, he gets shaving cream on Lonestar's right jacket arm. In the next shot Lonestar reaches down to grab the badge and that same arm comes into view and it is completely clean. There isn't enough time between shots for him to have wiped it off.
Continuity mistake: In the desert when we first see Lone Star and Barf carrying the luggage, Barf has two bags basically under his arms, with the straps over his shoulders. In the next shot the smaller bag has shifted over almost in front of him and the strap has dropped around his arm and chest.
Continuity mistake: When Dark Helmet takes the ring from Lonestar, he throws down into a grate. Later, when Megamaid explodes and Lonestar and company cheer, for a brief second, you can see the ring back on his finger.
Continuity mistake: Spaceball-1 is using a blue tractor beam to bring in Vespa's car, but when Barf opens the roof to rescue the girls, the blue light is nowhere to be seen.
