Trash becomes something more than low-budget exploitation with Slither, a goopy, gory horror-comedy from 2006 that pays homage to ‘80s genre classics. Writer-director James Gunn, who wrote 2004’s Dawn of the Dead, makes a very specific kind of film for a very specific audience. Those compelled by straight horror won’t be frightened, and those who enjoy their comedies without having to gag from disgust won’t be laughing. This movie is for those who can spot Gunn’s many visual and thematic references to the films that inspired him, who can grasp the irony of his characters, and who can appreciate his commitment tangible makeup effects.