OK, I lost track of the number 'homages' at around 14 or so. This film can go 2 ways- 'Scream'-like, where it's meta but done well, or 'Scary Movie'-like, where it just barfs on itself. I'm thinking more 'Scream.'
I'm a big Whedon fan, so I faith that he can pull this off. Like Undy, I may actually go see this in a theatre.
Favorite bit (yes, I know it's an old one...)-
Dude 1: "We should stay together."
[Door gets hit from outside]
Dude 1: "Maybe we should split up."
Dude 2: "Really?!?"