The MunstersGoofs

Throughout the series, in most scenes featuring flying bats or levitating people, the wires are visible.

In the first season's re-shoot of the opening credits, in order to introduce Pat Priest, as Fred Gwynne/ Herman is bending over to kiss Lily, it's possible to see Butch Patrick/ Eddie's legs moving, on the right balcony (upper right-hand screen corner), as he positions himself to come down the staircase for his introduction.

The Munsters regard their niece Marilyn (who looks like the ideal beauty of non-monster people) as ugly and deformed, yet everyone else in the town of Mockingbird Heights basically looks like Marilyn. The Munsters also watch movies and regard then-popular stars such as Frank Sinatra and Rock Hudson as ideal men, and Grandpa's beauty potions always conjure up a beauty who looks something like Marilyn. Shouldn't their concept of beauty be horrible monsters, in accordance with the premise that Marilyn is an ugly duckling? Nor do the Munsters seem to be aware that they look radically different from non-monster people, despite interacting with them on a daily basis.