Trivia: The disbelieving clerk Ash is explaining his adventure to in the S-Mart ending is Ted Raimi, who can also be seen in the crowd below the castle battlements receiving Ash's pep-talk just before the battle with Bad Ash's Army of Darkness. Ted is director Sam Raimi's brother--and is best known for his part as Joxer in the Hercules and Xena TV shows (of which brother Sam was executive producer) where he again worked with Bruce Campbell.
Trivia: Ash speaks the words, Klaatu Varata Niktu, this was paying homage to a film called The Day the Earth Stood Still. The words in that were Klaatu Barada Nikto (only slightly different), they are spoken by one of the humans (at the request of Klaatu) to Gort (Klaatu's robot) after suffering a potentially fatal injury at the hands of humans, to prevent Gort from destroying Earth. The tenuous link, therefore, is that this phrase must be spoken precisely to prevent the end of the world in both films...
Trivia: The army of the dead is basically made up of mostly skeletons, but in some of the scenes where they couldn't use stop motion for obvious reasons, they have real people standing in with skull masks. (01:02:30)
Trivia: AOD has 2 different endings, the one where he goes back and fights the zombie lady in S-mart, and the original one where he swallows too much juice and ends up in an apocalyptic future, they wanted to use the original ending but Universal wanted a more audience friendly ending, and they didn't want Ash to be such a anti hero so they changed and deleted a few other scenes. They released the original version to some countries.