Back in the '90s, horror seemed like a genre on its way to the graveyard. But then "Scream" happened, and suddenly scary movies were big business all over again. In fact, next to superhero movies, horror has been Hollywood’s most reliable profit generator since the turn of the millennium. Whether it’s studio-made fare or independent and international productions, there’s an audience out there ready and waiting to be freaked out. And it’s not just on the big screen: Some of the newest and scariest movies are making their debuts on streaming services like Netflix and Shudder. As we’re all counting down to Halloween, here’s Yahoo Entertainment’s countdown of the best horror movies released since 2000, all of which are available to stream before you head out for trick-or-treating.