Horror/Halloween Episodes of Non-Horror Shows
 

I don't watch much that isn't horror, but I was wondering what everyone's favorite horror or halloween episode from a (non horror) show was.
Pretty much every series that's been on for a few seasons has had a halloween episode, and I didn't know if any were worth watching.
I always like South Park's Halloween specials, especially the one with Korn solving a Scooby Doo type mystery.