Halloween is NOTHING without scary movies. Some movies that I would suggest watching this Halloween would be:

Night of the Living Dead, House Of Wax, Halloween, Nightmare on Elm Street, Friday the 13th, Evil Dead, The Funhouse, City of the Living Dead, Demons, Freddy Vs. Jason, Dead Silence, The Fog, The Thing, The Haunting, and The Amittyville Horror.

If you're with the kids or you're just a kid at heart yourself, I would suggest watching Hocus Pocus, Beetlejuice or just some other sort of Halloween comedy.