Visible crew/equipment: When Grampa turns off the TV, the entire crew is reflected in it. (00:26:35)
Visible crew/equipment: When Jesse is in the kitchen trying to get the skull from the bird's mouth, you can briefly see the puppeteer operating the bird in the lower right corner of the screen.
Continuity mistake: When William Bill Towner says, "It looks like an alternate dimension or something," he is kneeling down with his hands on his knees. In the sequential shot he is standing.