The hospital scenes in "The Accident" were filmed in a non-functional wing of a working hospital.
The van that breaks down in the "Siren" segment actually broke down on-set during production.
A gig poster for the band from the "Siren" segment (The White Tights) is visible at the bar in the "Jailbreak" segment.
The movie "Carnival of Souls" can be seen playing early on at the start of the movie in Roy's roadside cafe.
For the entire final sequence of "Siren," all of the footage is flipped.