Hocus Pocus is very funny, even with that gross Bette Midler. Our younger son and daughter-in-law have a tradition of watching it with our grandchildren each year.
Beetlejuice is still great, The Great Pumpkin and Charlie Brown, and not exactly horror but Clue, though many of the jokes are rather grownup.
Add in Lullaby of Woe and follow up with Now I lay me down to sleep and the kids will not sleep for a week!