Army Of Darkness (1992)

Sam Raimi's cult horror-comedy sends Ash Williams back through time to battle the Deadites, mixing gory practical effects with slapstick. Embeth Davidtz plays Sheila, the medieval love interest who gets turned into a possessed version of herself partway through. That transformation gives the film its one nude scene, brief and set against the swordplay and skeleton armies. The archive holds that single clip of Davidtz here.