The Cyclops (1957) by Bert I. Gordon
This is the only one of the classic 50’s Bert I pictures left unriffed, and I say, we can't let that stand. Here's the trailer:
As any MSTie can plainly see, it uses the exact same stock footage as 'King Dinosaur' and the same terrible front-projection techniques as 'The Amazing Colossal Man' and 'War of the Colossal Beast,' only somehow even crappier. In fact, I’m pretty sure the only reason they didn’t use it during the original run of MST3K was because they were all sick and tired of making fun of the same stupid iguana with a fin glued to his back.
I'd love to see this one riffed, but it may fall under the same umbrella as 'The Amazing Colossal Man' and 'War of the Colossal Beast,' where the film rights passed to Jack Nicholson's widow (his dad was one half of American International Pictures) who is fiercely protective of her IP rights has refused to allow Shout to release any of the MST3K episodes. (Even attempting to sue them for using still images in some of their bonus features.)