The Last Supper (I) (1995)
Arsenic in the wine
Mention in dialouge by 'Luke'
Luke talk about the backward cemetery of guests, where similar people are buried!
Jason Alexander's character says "Hasta La Vista, Baby".
Doggett suggests to Reyes the killer might use human flesh to fertilise his garden - an in-joke referencing this movie, which starred Annabeth Gish