As a witch, Halloween used to mean that I'd dress up like my pet, mimic her actions and get drunk on strawberry wine, making her my familiar. Halloween was also one of the eight major sabbats, where I'd bust out my guitar and growl praises to the devil, also while drinking strawberry wine. Now, as an ex-witch, it means putting on a costume and trick-or-treating with the kids in my neighborhood who love my crazy Jason Vorhess getup, then gorging on the candy. It also means a night to watch a shit-ton of horror movies.
Interestingly enough, the movie Halloween (where Rob Zombie not only remade it but re-slammed it), which I recently watched again, is about Michael Meyers returning from the dead and killing everyone in sight. This goes along with my former witch teaching that the veil between the living and the dead is thin on Halloween; therefore, Michael just steps right through it.
With my ex-wife, Halloween meant holding a seance and conjuring up a ghost of the previous apartment renter who'd hung himself--a true poltergiest if I've ever heard one.
Now, it's just a fun time of the year which I'd BETTER celebrate as a horror author. So get out there and have some fun! Whether it's Samhain, or just a fun holiday, it's an excuse to PARTY.