Hop, Look and Listen (1948)

Sylvester flips to the other side for one frame and the cel is incorrectly placed backwards.

Swing You Sinners (1930)

An area under the stampede of ghosts is painted white many times when it shouldn’t be painted at all.

South Park: Fat Camp (2000)

Kyle’s mouth is vertical for a few seconds

Scrap Happy Daffy (1943)

When a mirror breaks during “We’re in to Win” a pair of legs in one of Daffy’s collection of reflections turns from gray to white.

Not So Quiet (1930)

Pete’s hat changes from white to black.

Woody Woodpecker (1941)

Woody’s feet disappear for a frame in this scene.

Not So Quiet (1930)

Oswald stretches his legs as he doges cannonballs but as he goes back down, his arm disappears 

Yankee Doodle Donkey (1944)

A set of dog legs disappear for a second in this short.

Fiddlin’ Fun (1934)

The goat’s cel slightly overlaps the stands.

Five and Dime (1933)

As a crowd bobs rhythmically to Oswald’s song like any normal 30’s cartoon, one crowd member’s bow tie flickers from black to white,