Revealing mistake: There are several places where Mindy does not favor her "sprained" ankle. The most noticeable is when she and Mork are about to open the trunk, she shifts her weight from one foot the other a few times.
Revealing mistake: During the sword fighting scene, the split in the couch is visible before it actually gets split. Also in this scene, when Xerko has Mork at sword point right before Bickley comes in, Mork's ribbon is cut in the close up, but in the long shot, it's intact. Xerko will later cut the ribbon.