In the first segment, the bridge graffiti stating "Jimmy Is A Dead F***" is a reference to Friday The 13th: The Final Chapter.
In The Companion, Smitty gives Harold a lunchbox which features on it characters from the classic horror movie Killer Klowns from Outer Space.
Tricia Helfer who plays Lydia uses the word Frak to curse. This is a made up curse from Battlestar Galactica (2004) in which she starred.
The boy running from the scarecrow in The Companion is named Harold. The scarecrow that comes to life in Scary Stories to Tell in the Dark (both the book and movie) is named Harold.
As of season 4 of the series, the scarecrow from The Companion, along with the monkey paw from the segment Night of the Paw, make an appearance in nearly every episode in the pages of the Creepshow comic, either in various ads or as pages from the actual story.