Stephen "Flyboy" Andrews

First appearance: Dawn of the Dead (1978)
A group of people flee the city during the early days of the zombie apocalypse. They find themselves at an abandoned mall and decide to make that their home. Eventually they find that sometimes the worst thing about being a survivor or the zombie apocalypse is being a survivor of the zombie apocalypse. Fortunately they're reminded that there are worse things. Namely motorcycle gangs.

One of the best zombie movies ever made (second only to Day of the Dead and Return of the Living Dead) and the movie that really hammered home the "people are worse than the monster" aspect of the how zombie thing.

Tusken Raider

First appearance: Star Wars (1977)

Along time ago in a galaxy far far away...

A weird mix of Sword and sorcery fantasy and  sci-fi tropes delivers the story of a old religious man convincing a naive farm boy to join a terrorist organization to help destroy a government facility.

The first movie I actually remember seeing in theatres. before all this "Episode 4" and "New Hope" nonsense was attached to it.

Worm eye Zombi

First appearance: Zombi 2 aka Zombie aka Zombie Flesh Eaters aka Woodoo (1979)

A seemingly abandoned boat drifts drifts New York harbor. When the police investigate they find a large rotting man who suddenly attacks them. Meanwhile on an island somewhere some over worked doctors are having to deal with zombies. The daughter of one of the doctors wants to go to the island to find out what happened to her dad. This is the movie with the infamous eyeball impaling and the incredible scene where a zombie fights a shark.
Also, according to his introduction on the blu-ray, this is Guillermo Del Toro's favorite movie.