Audio problem: When Miguel and Steele are collecting some more of the zombies, Steele says 'Nice hat, asshole,' and laughs. Watch carefully at the end bit: they dubbed a laugh into the movie, but it's painfully obvious that his mouth doesn't move as he does it.
Day of the Dead (1985)
1 audio problem - chronological order
Directed by: George A. Romero
Starring: Jarlath Conroy, Joseph Pilato, Lori Cardille, Terry Alexander
Revealing mistake: When Rhodes is pointing his gun at Steele, telling him to shoot Sarah, there's no bullet in the chamber of his gun.
Trivia: Lori Cardille, who plays Sarah, is the daughter of Bill "Chilly Willy" Cardille, who played the newscaster that talks to the sheriff in the original Night of the Living Dead.