Mostly for the two actors introduced in the beginning (I won't name them because Frank has a good point, the less you know the better).
It was amusing, entertaining, not amazing. The deconstructing the horror movie thing reminded me a lot of Behind the Mask--although Behind the Mask is still a totally different, and better movie.
I'd say it's worth seeing. Not as a horror movie but a morbid comedy in a horror setting.