Funeral at Fifty-Mile - S1-E22
Continuity mistake: When Jessica walks from the house to the barn at the end, she is wearing knee high brown boots. By the time she reaches the barn they have been replaced with court shoes.
Come Back to the Five and Dime, Stephen King, Stephen King - S7-E4
Continuity mistake: In the opening scene the kid on the left's mask keeps changing from on to off between shots.
Continuity mistake: After Cliff talks to Peter, Theo is told to run to the neighbors across the street. However, he can be seen in the background of some shots when the twins do their game. As soon as the twins finish, Theo is shown coming back into the house.
Continuity mistake: During the second review of the class's commercials, a pink paper airplane changes hands between Tony and Angela without being tossed or passed.