Messalina, Messalina

The production recycled virtually all of the $20 million worth of sets, costumes, props, and extras from Caligula (1979), when it was feared that the latter would never be released due to numerous pending lawsuits. In the opening credits, there is a legal statement acknowledging this: "Certain elements of the sets and decorations created for the film Caligula by Danilo Donati have been used in the production of this film without his consent."

When the fly is buzzing around in front of the Roman guard's face (just before he eats it), if you look carefully, as it flies in front of his face, you can barely see the string holding up the fake fly being dangled in front of the actor's face.