When Fairuza Balk's character reminisces about the shower she just took while being hassled by Walker, she mimes the infamous stabbing move from Psycho.
When Stacia asks Wheeler what the Horrible Thing is, he tells her, "It's kind of a two-headed baby skeleton, I think. It gives me the creeps. Baby monsters...have you ever seen one?"
In the scene when Walker chases the girl through the woods, he tells her, "Come on, how many times have we seen this? I know you saw this in Texas Chainsaw... Both fucking versions!"