The original DVD release of the Mystery Science Theater 3000 riff of Godzilla vs Megalon. MST3K licensed the film from a company that did not actually own the rights to it, and only discovered when Toho sent out a cease and desist following the release of MST3K volume 10. Production was stopped, but a few hundred copies were still sold.
Funnily enough some of those copies were actually sold to Blockbuster, who somehow were allowed to keep renting them out even after the C&D went into effect. I made sure to rent a copy ASAP once I found out.