Knight of the Living Dead

In one scene, you can see Dean reading Tales of the Teenage Mutant Ninja Turtles #7 volume 2. The director Bjarni Gautur is a big Ninja Turtle fan and tries to make a reference to them in every movie.

When Clark and his girlfriend are leaving the ice cream store, the camera and the cameraman are visible in the window.

References The Thin Man (1934)