While most spoof films fall apart storyline wise making the entire film unwatchable (which is natural for its genre given that it's pulling in all different movies) this one holds together quite well. The storyline is simple and easy to follow, it hints towards the parodies within it instead of trying to mask them into the story, and the actors, while not a-listers, played the roles perfectly.
It wasn't scary, or thrilling but it wasn't made for that purpose. What it's made for is the laughs, and they're definitely included.
It's not the best film in the world, but it's one I wouldn't turn my nose to.