Acting
Without Scott and Dourif and to a lesser extent Flanders, this could have been a dud. Dourif, especially was sensational as the Gemini Killer, one of the creepiest characters that I've seen on film and I loved the exchange between Flanders and Scott early on, when Scott tells the story of the carp in his bath. He did it straightfaced in spite of the fact that Flanders was cracking up.
Too late to die Young