Halloween Episodes

You know how lots of shows do special Halloween episodes? These episodes tend to take a step away from the normal tone of the show, and become either supernatural (despite general disbelief in that) or humorously dark.

• 'The Simpsons' did it repeatedly with their "Treehouse of Horror" episodes.
• 'Friends' did it almost every year. Of course, they celebrated every major American holiday possible! Thanksgiving anyone?
• 'Dawson's Creek' did it...with episodes jokingly pointing out Williamson's horror background.
• 'Bones' has done it...with costumes!

And technically 'Rizzoli & Isles' did it tonight. Except it's August, but you know...they're a summer show, so this is basically their October anyway.