Continuity mistake: Before the dance contest Donna paints her lips next to a Dumbo sign. The white paper coming out of her bag disappears in the side shot.
Continuity mistake: When the security bar is placed on the guys sitting on the ferris wheel, the rifle appears on the back shots, but disappears on the front ones.
Continuity mistake: In the barn with Ward, who is covered in dust, Wood presses the gas pedal and Ward's head bends backwards for a brief second. In that angle, his head is spotless, only to return back to dusty in the following shots.
Continuity mistake: When Ward is about to nail the crown on the front door, his hand is facing right. A frame later it faces upwards.
Continuity mistake: When the Douglas' home is sliding down the cliff, it has moved a long distance seen from sea level view, but very short from Ward's POV.
Continuity mistake: After Ward enters the barn in reverse gear and comes to a stop, he is spotless, yet from a front shot, a frame later, he is covered in white dust.
Continuity mistake: When Ward turns the cannon and destroys the stuff in his home, the mess differs between shots, with stuff fixing itself and relocating somewhere else.
Continuity mistake: When the Douglas kids's bedroom plummets, the kid on the left is facing left, yet in the close-up he is facing the right.
Continuity mistake: After Kelso releases the sidecar's screw he makes a quick right turn, yet a frame later, from the wide angle, the handlebar and the bike are both facing straight.
Continuity mistake: When Kelso drives Sitarski in his sidecar, his white scarf swaps from over his chest to over his shoulder, back and forth.
Continuity mistake: When Kelso faints on the street a plastic Santa Claus falls on him, feet over Kelso's head. However, in the close-up, the Santa has turned 180º. Two seconds later, when the soldiers come to rescue him, Kelso and Santa have turned 45º to the right.
Continuity mistake: Kelso's plane has flames all around which suddenly disappear when the plane arrives downtown (and, most probably, different plane models and sets are used).
Continuity mistake: Kelso's plane crashes against a streetlight which hangs next to the cockpit, but it disappears in further shots.
Continuity mistake: When Kelso's plane crashes downtown the cockpit is covered in smoke, yet a frame later it's clear and opened with Kelso perfectly visible.
Continuity mistake: When Sitarski hands Betty the washed-up doughnut her hand is lowered resting on the bar. A frame later it's raised at chest level.
Continuity mistake: Sitarski is served one doughnut, grabs it and leaves an empty plate. A frame later, when the doughnut falls, a second one appears.
Continuity mistake: At the bar with Betty, Sitarski is offered a salad. The waitress' arms change positions between the wide and close-up shot.
Continuity mistake: While Wally watches the dance club from the window outside, a dog sitting on its hind legs by the edge of the curb, swaps to standing on all four legs by the middle of the curb.
Continuity mistake: When Kelso's plane leaves, the loose petrol hose's position and movement differs between the wide and close-up shots.
Continuity mistake: After Wally picks up the picture in the sink, the amount of foam on the skimmer decreases between frames.
