Continuity: The Wizard shouts, "I can't come back I don't know how it works" and the Scarecrow is on Dorothy's left. In the next shot he's on her right.

Continuity: The Scarecrow is in the lead as the four run away from the guards and enter the tower where the Wicked Witch is eventually melted. In the next shot the Tin Man is in front.

Continuity: The pole that the Scarecrow was on moves out in front of the corn at the end of the scene as Dorothy and the Scarecrow run off and sing, "We're off to see the Wizard".

Continuity: Dorothy throws water at the Wicked Witch not knowing it will melt her. If you look closely the witch is drenched when it hits her but in the next close up shot she doesn't have a drop of water on her.

Visible crew/equipment: In the scene where Dorothy meets the Scarecrow, you can see the string that holds the Scarecrow up. It's above his head.

Revealing: As Dorothy skips off on her journey at the very end of the song follow the yellow brick road, the shot cuts just in time to prevent her hitting the painted backdrop. The join between the ground and the backdrop is visible.

Visible crew/equipment: Glinda sends Dorothy off saying, "Just follow the Yellow Brick Road" and Dorothy walks through the shadow of the camera's crane.

Continuity: As Dorothy and the rest are chased by the flying monkeys the order of the four changes between shots each time we see them in the overhead shots.

Continuity: Before they meet the Cowardly Lion, Dorothy starts to sing "Lions and Tigers And Bears" and the axe jumps from the Tin Man's left hand to his right between shots.

Continuity: Dorothy says, "Oh, now I'll never get home" and her dress is clean. Several shots later the Tin Man asks, "What have you learned, Dorothy?" and there are now spots all over the front of it that last for the rest of the scene.

Visible crew/equipment: Dorothy walks around Munchkinland and when we first see the Munchkin's heads popping up the crew's shadow can be seen on the flowers to the right of the screen.

Continuity: Dorothy's house just went threw a cyclone with chairs turned over, windows blown out and pictures knocked off the walls. Yet her comforter stays neatly folded and doesn't move from the bed. It's also changed and now has a plaid design on it.

Continuity: Glinda tells Dorothy, "Their magic must be very powerful…" and Dorothy has her left hand around Toto. In the next shot she's holding the flowers in front of her.

Audio problem: Just before Dorothy lets the scarecrow down, his lips don't match what he is saying.

Continuity: When Dorothy is walking on the pig sty platform and talking to Zeke, he is pouring the pig feed into something. The amount of feed he is pouring changes between shots.

Revealing: Whenever Dorothy, the Scarecrow, the Tin Man, and the Lion go off into the horizon you can see the line on the floor of the sound stage where the fake horizon is and the scene cuts off right as the four get to that point.

Continuity: The flower pot crown that falls from the Cowardly Lion's head goes from being behind the gang to by the right of them, with no-one touching it.

Visible crew/equipment: In the scene where the Lion sings his "If I Were King" song just before visiting the Wizard, if you watch closely above his moving tail, there is a string holding up and moving around the Lion's tail.

Continuity: In the scene where the Wizard is about to bestow 'awards', the Scarecrow is lined up second from the left as the Wizard begins to speak. In the next shot while the Wizard is still speaking, the Scarecrow 'jumps' to the far right.

Continuity: In one of the most endearing scenes from one of the greatest movies of all times, nobody noticed that as Dorothy sings “Over the Rainbow” the haystack she’s standing next to just materializes between shots. Later it disappears long before the twister reaches the house. If you watch the movie you’ll see the exact spot where the haystack should be seen as Aunt Em gives Dorothy a cruller and says to her, “…and find yourself a place where you won’t get into any trouble”.