Yea i was pretty disappointed with The Cabin In The Woods also. I loved the last 30 minutes when it basically became an R-rated version of Monsters Inc. but I just didn't think the rest of the movie was that entertaining.
Behind The Mask: The Rise of Leslie Vernon is a highly superior horror satire in my opinion. It honestly blows my mind how not many people know about that film. It should've gotten the recognition Scream got when it was released.