Mike Goes to the Opera - S1-E13
Continuity mistake: When we see Victoria and Joyce at the very start, in the very first shot Victoria has a good chunk of cake on her fork. When the shot changes, the fork is empty. (00:02:20)
Mike Goes to the Opera - S1-E13
Continuity mistake: At the opera, Mike asks what it's about. When he does so the way he holds his program changes instantly between shots. (00:04:50)
Mike Goes to the Opera - S1-E13
Continuity mistake: At the Opera Mike says something about a boxing match. When he does, Molly puts her program down, camera changes, and she lowers her program again. (00:05:00)
Mike Goes to the Opera - S1-E13
Continuity mistake: When Molly hands Peggy the bag of medicine, the bag rotates itself. Note the fold at the top of the bag. (00:14:40)