I'm pretty old-school and traditional. While I don't like scary or evil costumes, I do let my girls dress up and go trick or treating in my in-laws neighborhood with my husband and father in law. I stay at the in-laws' home handing out candy (because my mother in law doesn't like doing it) and commenting to all the trick or treaters about their cute, scary, or inventive costumes. When the girls come home we indulge in home made pizza and sort through their loot.
So that's our Halloween, and I look forward to it every year!