Dennis Haunts a House - S1-E13
Continuity mistake: Alice picks up a cup of coffee with her right hand. In the next shot, both the cup and her hand are on the table. (00:07:20)
Dennis' Penny Collection - S2-E14
Character mistake: When Dennis sees Mr. Wilson park his car and put a penny in the parking meter, he asks, "Did you notice the date on it?" Mr. Wilson tells him, "It was 1492." (00:21:15)
