The Cabin in the Woods (2012)

Drew Goddard and Joss Whedon build two films at once: a creepy cabin story with every cliché in place, and an office comedy about the people making sure those clichés happen. The jokes come from the gap between them, with bored technicians placing bets while teenagers die. Best watched knowing as little as possible, because the second half turns into an all-out monster free-for-all that rewards horror fans for every film they have seen and still manages proper jolts along the way.