Okay. This is going to be the shortest review ever! Why? Because I am NOT going to review Cabin in the Woods. I am not going to put links that lead you to anything (stay away from wiki) and there will be no trailer attached. I do not want anything to spoil the experience for you.
All I am going to say is it is written Joss Whedon, who is a genius in my opinion, and directed by Drew Goddard and the film is SPECTACULAR! (Yes, I am lucky and got to see a screening given by Mondo! You can hate me.)
Go watch it! You will not regret it! I promise.