But Cabin In The Woods is certainly my favorite thus far.
Real good, geeky/nerdy stuff at play, some great acting from Richard Jenkins and Brad Whitford, as well as the "teens"... It felt like a terrific episode of Buffy.
While it could have stood to be a little more scary and a little less goofy, and while it's certainly not the game changing end all be all of referential horror cinema, it's still the most satisfying horror flick I've seen in some time. Well worth checking out, but try to avoid anything about it going in. You'll be better off for it.