At the beginning, Taylor is standing in front of the Red Rabbit Pub. This is a reference to the Red Rabbit matchbook found by Dr. Loomis in Halloween - Die Nacht des Grauens (1978).
The first time Taylor interviews Eugene and his wife, a Lament Configuration puzzle box from Hellraiser - Das Tor zur Hölle (1987) can be seen sitting on a table.
When Leslie and the graduate students are scoping out potential victims at the school, he makes eye contact with a young woman. As this happens, three girls can be spotted playing jump rope in the background. This is a reference to the "A Nightmare on Elm Street" film franchise.
When Leslie (Nathan Baesel) first takes Taylor (Angela Goethals) and her crew to meet Eugene (Scott Wilson) and his wife, the car parked in Eugene's driveway is the same color, make, and model as the car seen in Director Sam Raimi's movies.