What is it about monster movies that makes you feel exhilarated and yet utterly terrified to go to sleep at night? Maybe it's the realism of the special effects. Maybe it's the endless inventiveness of filmmakers, coming up with new ways to make creatures scary. Or maybe it's more straightforward: the love of being absolutely scared witless without any repercussions whatsoever. Whatever it is, this genre isn't going anywhere, and as evidenced by this week's release of The Mummy, as part of the interconnected Dark Universe, it looks like there's many more terrifying tales yet to be told. This list compiles 25 of the best so far. Ready to go on a monster hunt?