Joss Whedon is a genius. If you haven't bowed down to the throne of Firefly and Buffy the Vampire Slayer then pull out your knee pads and add them to the top of your Netflix cue (and be willing to overlook Dollhouse).
But his track record with movies is ... questionable. Serenity was awesome but basically an extension of Firefly, and his script addition to the Alien franchise is abysmal.
So along comes Cabin in the Woods, which he produced and co-wrote with director Drew Goddard. While these posters don't reveal any of the plot, they really hint at a fun movie:
Check out all three over at WIRED
What do you all think? Fun? Funny? Too self-referential?