We have our Tom's birthday on the 31st (very appropriate), so usually we don't do much with Halloween. This year we're planning to go to a Civil War Ghosts program on the 30th.
My mom's birthday is H'ween so we went all out when I was a kid. My parents still do. They host a costume party every year down on Jekyll and award prizes for the best costumes. Last year's winner came dressed as my dad, which was pretty unique.