I'm usually not crazy about the movie replica masks, but this one dude had the Michael Myers mask/hair, with the full insane asylum jump suit and just stood there in peoples yards staring at the house while his kids trick or treated. Never said a word to anyone.
It was super creepy.
Also, toward the end of the night this very old hearse pulled into the neighborhood. It suddenly stopped, shot smoke out from underneath it, lowered itself to about an inch from the ground, started blasting the Halloween music, and turned a blacklight on inside. All 4 people inside were wearing these skeleton masks, which were illuminated by the blacklight but that was all you could see because of the tinted windows. VERY COOL. Wish I had a picture, but I was sort of mesmerized.