Well, if you don't want to psychologically damage your children...

One of my aunts used to look after my brother and I when were little and she had the brilliant idea of putting on Child's Play. I hid under the coffee table and cried the entire time.

It'll be fun when they're old enough to both watch and appreciate films such as IB so you can then watch them together (or at least that's what happened with my dad and I)