Zombi 3 (1988)
Zombi 3 (also known as Zombie Flesh Eaters 2 in the UK) is the 1988 followup to Zombi 2, itself an unofficial sequel to 1978's Dawn of the Dead (released in Italy as Zombi). Beyond its title, Zombi 3 has little to no relation with the characters or plotlines of Zombi, Zombi 2 or in fact any subsequent Zombi films. Its only major similarity is in that it is another zombie horror film. It is even less revered film than its predecessor was, generally hailed only for being "so bad it's good". The movie has an opening theme song that greatly resembles the theme of The Return of the Living Dead.
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