Return of the Living Dead II (1988)
The zombie head has a screwdriver in her ear, just like the zombie maintenance man in Dawn of the Dead.
Poster is shown in a video store.
Casper Christensen mentions the film
Mark was wearing a Return of the Living Dead Part II shirt in one scene.
The Tarman zombie cameo is a homage to the first two movies, in which he appeared.
Poster of the movie was shown when James mentioned the Return of the Living had many sequals.
DVD is shown.
Centipede is distracted by an aerobics video
Features Hollywood's hottest Aerobics star as herself