The show was "Harry and the Henderson's"..... and it sucked in that special way that can only be done in a cheap costume lacking any taste or effects budget.
As for crop circles- a great many of them are real. Not all, not even most, but a lot of them. Of course, it's caused by a peculiar effect related to lightning, or the Aurora Borealis- usually called "ball lightning". Not exactly evil spirits or alien communication, but damned cool looking. You can create a miniature version in a microwave, if you do it right. Of course, if you do it wrong, you're going to have to buy a new microwave.
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