Up front warning: This is the ultimate low budget b movie campy horror film. It was written and shot in a seven days on the sets of another movie. It is not scary and is by no objective means a good movie. If you like campy low budget slashers it's a must watch.
Sorority House Massacre 2. Five college women spend the night in their new sorority house, the old Hokstedter place, and make the mistake of using a Ouija board. It has a great twist revealing an unlikely hero and the last line of the movie is my favorite line in all of cinema.
Least favorite: Sorority House Massacre. Maybe the worst example of a low budget slasher flick ever made. This movie is so bad that the sequel used clips from a different movie, Slumber Party Massacre, for it's flashbacks and backstory. While intended to be scary campy low budget slashers flicks tend to be so ridiculously badly written and acted that they become parodies of themselves and present as humorous movies. Sorority House Massacre isn't interesting enough to reach this important self parody status and winds up being neither scary nor funny.