What are some scarry movies to watch that are on on demand if you have atnt uverse?

Me and my sisters want to watch a scary movie and we have At%26amp;T universe and want a movie that is on demand does anyone know of any? If not just give me some scary movie ideas and ill c if they r on my tv.|||I think Paranormal Activity is on there, last time I checked, but I don't remember any others off the top of my head.